{"id":9862,"date":"2023-12-27T01:46:10","date_gmt":"2023-12-26T22:16:10","guid":{"rendered":"https:\/\/rasanegar.com\/blog\/%d9%86%d8%ad%d9%88%d9%87-%d8%a8%d8%b1%d8%b1%d8%b3%db%8c-%d9%85%d9%82%d8%a7%d8%af%db%8c%d8%b1-nan-%d8%af%d8%b1-%d9%be%d8%a7%db%8c%d8%aa%d9%88%d9%86\/"},"modified":"2023-12-27T01:46:10","modified_gmt":"2023-12-26T22:16:10","slug":"%d9%86%d8%ad%d9%88%d9%87-%d8%a8%d8%b1%d8%b1%d8%b3%db%8c-%d9%85%d9%82%d8%a7%d8%af%db%8c%d8%b1-nan-%d8%af%d8%b1-%d9%be%d8%a7%db%8c%d8%aa%d9%88%d9%86","status":"publish","type":"post","link":"https:\/\/rasanegaar.com\/blog\/%d9%86%d8%ad%d9%88%d9%87-%d8%a8%d8%b1%d8%b1%d8%b3%db%8c-%d9%85%d9%82%d8%a7%d8%af%db%8c%d8%b1-nan-%d8%af%d8%b1-%d9%be%d8%a7%db%8c%d8%aa%d9%88%d9%86\/","title":{"rendered":"\u0646\u062d\u0648\u0647 \u0628\u0631\u0631\u0633\u06cc \u0645\u0642\u0627\u062f\u06cc\u0631 NaN \u062f\u0631 \u067e\u0627\u06cc\u062a\u0648\u0646"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\"><p class=\"ez-toc-title\" style=\"cursor:inherit\">\u0633\u0631\u0641\u0635\u0644\u0647\u0627\u06cc \u0645\u0637\u0644\u0628<\/p>\n<\/div><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/rasanegaar.com\/blog\/%d9%86%d8%ad%d9%88%d9%87-%d8%a8%d8%b1%d8%b1%d8%b3%db%8c-%d9%85%d9%82%d8%a7%d8%af%db%8c%d8%b1-nan-%d8%af%d8%b1-%d9%be%d8%a7%db%8c%d8%aa%d9%88%d9%86\/#%d9%85%d8%b9%d8%b1%d9%81%db%8c\" >\u0645\u0639\u0631\u0641\u06cc<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/rasanegaar.com\/blog\/%d9%86%d8%ad%d9%88%d9%87-%d8%a8%d8%b1%d8%b1%d8%b3%db%8c-%d9%85%d9%82%d8%a7%d8%af%db%8c%d8%b1-nan-%d8%af%d8%b1-%d9%be%d8%a7%db%8c%d8%aa%d9%88%d9%86\/#%da%86%d8%b1%d8%a7_%d8%a8%d8%b1%d8%b1%d8%b3%db%8c_%d9%85%d9%82%d8%a7%d8%af%db%8c%d8%b1_nan_%d9%85%d9%87%d9%85_%d8%a7%d8%b3%d8%aa\" >\u0686\u0631\u0627 \u0628\u0631\u0631\u0633\u06cc \u0645\u0642\u0627\u062f\u06cc\u0631 NaN \u0645\u0647\u0645 \u0627\u0633\u062a<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/rasanegaar.com\/blog\/%d9%86%d8%ad%d9%88%d9%87-%d8%a8%d8%b1%d8%b1%d8%b3%db%8c-%d9%85%d9%82%d8%a7%d8%af%db%8c%d8%b1-nan-%d8%af%d8%b1-%d9%be%d8%a7%db%8c%d8%aa%d9%88%d9%86\/#%d9%85%d9%82%d8%a7%d8%af%db%8c%d8%b1_nan_%d8%af%d8%b1_%d8%b9%d9%85%d9%84%db%8c%d8%a7%d8%aa_%d8%b1%db%8c%d8%a7%d8%b6%db%8c\" >\u0645\u0642\u0627\u062f\u06cc\u0631 NaN \u062f\u0631 \u0639\u0645\u0644\u06cc\u0627\u062a \u0631\u06cc\u0627\u0636\u06cc<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/rasanegaar.com\/blog\/%d9%86%d8%ad%d9%88%d9%87-%d8%a8%d8%b1%d8%b1%d8%b3%db%8c-%d9%85%d9%82%d8%a7%d8%af%db%8c%d8%b1-nan-%d8%af%d8%b1-%d9%be%d8%a7%db%8c%d8%aa%d9%88%d9%86\/#%d9%86%d8%ad%d9%88%d9%87_%d8%a8%d8%b1%d8%b1%d8%b3%db%8c_%d9%85%d9%82%d8%a7%d8%af%db%8c%d8%b1_nan_%d8%af%d8%b1_%d9%be%d8%a7%db%8c%d8%aa%d9%88%d9%86\" >\u0646\u062d\u0648\u0647 \u0628\u0631\u0631\u0633\u06cc \u0645\u0642\u0627\u062f\u06cc\u0631 NaN \u062f\u0631 \u067e\u0627\u06cc\u062a\u0648\u0646<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/rasanegaar.com\/blog\/%d9%86%d8%ad%d9%88%d9%87-%d8%a8%d8%b1%d8%b1%d8%b3%db%8c-%d9%85%d9%82%d8%a7%d8%af%db%8c%d8%b1-nan-%d8%af%d8%b1-%d9%be%d8%a7%db%8c%d8%aa%d9%88%d9%86\/#%d8%a8%d8%a7_%d8%a7%d8%b3%d8%aa%d9%81%d8%a7%d8%af%d9%87_%d8%a7%d8%b2_mathisnan_%d8%aa%d8%a7%d8%a8%d8%b9\" >\u0628\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 math.isnan() \u062a\u0627\u0628\u0639<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/rasanegaar.com\/blog\/%d9%86%d8%ad%d9%88%d9%87-%d8%a8%d8%b1%d8%b1%d8%b3%db%8c-%d9%85%d9%82%d8%a7%d8%af%db%8c%d8%b1-nan-%d8%af%d8%b1-%d9%be%d8%a7%db%8c%d8%aa%d9%88%d9%86\/#%d8%a8%d8%a7_%d8%a7%d8%b3%d8%aa%d9%81%d8%a7%d8%af%d9%87_%d8%a7%d8%b2_numpyisnan_%d8%aa%d8%a7%d8%a8%d8%b9\" >\u0628\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 numpy.isnan() \u062a\u0627\u0628\u0639<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/rasanegaar.com\/blog\/%d9%86%d8%ad%d9%88%d9%87-%d8%a8%d8%b1%d8%b1%d8%b3%db%8c-%d9%85%d9%82%d8%a7%d8%af%db%8c%d8%b1-nan-%d8%af%d8%b1-%d9%be%d8%a7%db%8c%d8%aa%d9%88%d9%86\/#%d8%a8%d8%a7_%d8%a7%d8%b3%d8%aa%d9%81%d8%a7%d8%af%d9%87_%d8%a7%d8%b2_pandasisnull_%d8%aa%d8%a7%d8%a8%d8%b9\" >\u0628\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 pandas.isnull() \u062a\u0627\u0628\u0639<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/rasanegaar.com\/blog\/%d9%86%d8%ad%d9%88%d9%87-%d8%a8%d8%b1%d8%b1%d8%b3%db%8c-%d9%85%d9%82%d8%a7%d8%af%db%8c%d8%b1-nan-%d8%af%d8%b1-%d9%be%d8%a7%db%8c%d8%aa%d9%88%d9%86\/#%d9%85%d9%82%d8%a7%db%8c%d8%b3%d9%87_%d8%b1%d9%88%d8%b4_%d9%87%d8%a7%db%8c_%d9%85%d8%ae%d8%aa%d9%84%d9%81\" >\u0645\u0642\u0627\u06cc\u0633\u0647 \u0631\u0648\u0634 \u0647\u0627\u06cc \u0645\u062e\u062a\u0644\u0641<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/rasanegaar.com\/blog\/%d9%86%d8%ad%d9%88%d9%87-%d8%a8%d8%b1%d8%b1%d8%b3%db%8c-%d9%85%d9%82%d8%a7%d8%af%db%8c%d8%b1-nan-%d8%af%d8%b1-%d9%be%d8%a7%db%8c%d8%aa%d9%88%d9%86\/#%d9%86%d8%aa%db%8c%d8%ac%d9%87\" >\u0646\u062a\u06cc\u062c\u0647<\/a><\/li><\/ul><\/nav><\/div>\n<span class=\"span-reading-time rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\">\u0632\u0645\u0627\u0646 \u0644\u0627\u0632\u0645 \u0628\u0631\u0627\u06cc \u0645\u0637\u0627\u0644\u0639\u0647: <\/span> <span class=\"rt-time\"> 4<\/span> <span class=\"rt-label rt-postfix\">\u062f\u0642\u06cc\u0642\u0647<\/span><\/span><p> <br \/>\n<\/p>\n<div class=\"mt-8 content\"><noscript><\/p>\n<style>.lazyload-placeholder { display: none;  }<\/style>\n<p><\/noscript><\/p>\n<h2 id=\"introduction\"><span class=\"ez-toc-section\" id=\"%d9%85%d8%b9%d8%b1%d9%81%db%8c\"><\/span>\u0645\u0639\u0631\u0641\u06cc<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u0627\u0645\u0631\u0648\u0632 \u0642\u0635\u062f \u062f\u0627\u0631\u06cc\u0645 \u0646\u062d\u0648\u0647 \u0628\u0631\u0631\u0633\u06cc \u0645\u0642\u0627\u062f\u06cc\u0631 NaN (\u0646\u0647 \u06cc\u06a9 \u0639\u062f\u062f) \u0631\u0627 \u062f\u0631 \u067e\u0627\u06cc\u062a\u0648\u0646 \u0628\u0631\u0631\u0633\u06cc \u06a9\u0646\u06cc\u0645.  \u0645\u0642\u0627\u062f\u06cc\u0631 NaN \u0645\u06cc \u062a\u0648\u0627\u0646\u062f \u0647\u0646\u06af\u0627\u0645 \u067e\u0631\u062f\u0627\u0632\u0634 \u062f\u0627\u062f\u0647 \u0647\u0627 \u0628\u0633\u06cc\u0627\u0631 \u0622\u0632\u0627\u0631\u062f\u0647\u0646\u062f\u0647 \u0628\u0627\u0634\u062f \u0648 \u062f\u0627\u0646\u0633\u062a\u0646 \u0646\u062d\u0648\u0647 \u0634\u0646\u0627\u0633\u0627\u06cc\u06cc \u0622\u0646\u0647\u0627 \u0645\u06cc \u062a\u0648\u0627\u0646\u062f \u0634\u0645\u0627 \u0631\u0627 \u0627\u0632 \u0628\u0633\u06cc\u0627\u0631\u06cc \u0627\u0632 \u0633\u0631\u062f\u0631\u062f\u0647\u0627\u06cc \u0627\u062d\u062a\u0645\u0627\u0644\u06cc \u062f\u0631 \u0645\u0633\u06cc\u0631 \u0646\u062c\u0627\u062a \u062f\u0647\u062f.<\/p>\n<h2 id=\"whycheckingfornanvaluesisimportant\"><span class=\"ez-toc-section\" id=\"%da%86%d8%b1%d8%a7_%d8%a8%d8%b1%d8%b1%d8%b3%db%8c_%d9%85%d9%82%d8%a7%d8%af%db%8c%d8%b1_nan_%d9%85%d9%87%d9%85_%d8%a7%d8%b3%d8%aa\"><\/span>\u0686\u0631\u0627 \u0628\u0631\u0631\u0633\u06cc \u0645\u0642\u0627\u062f\u06cc\u0631 NaN \u0645\u0647\u0645 \u0627\u0633\u062a<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u0645\u0642\u0627\u062f\u06cc\u0631 NaN \u0645\u06cc \u062a\u0648\u0627\u0646\u062f \u062f\u0631\u062f\u0633\u0631 \u0648\u0627\u0642\u0639\u06cc \u0628\u0627\u0634\u062f\u060c \u0628\u0647 \u062e\u0635\u0648\u0635 \u0632\u0645\u0627\u0646\u06cc \u06a9\u0647 \u0628\u0627 \u0645\u062d\u0627\u0633\u0628\u0627\u062a \u0639\u062f\u062f\u06cc \u06cc\u0627 \u062a\u062c\u0632\u06cc\u0647 \u0648 \u062a\u062d\u0644\u06cc\u0644 \u062f\u0627\u062f\u0647 \u0647\u0627 \u0633\u0631 \u0648 \u06a9\u0627\u0631 \u062f\u0627\u0631\u06cc\u062f.  \u0622\u0646\u0647\u0627 \u0645\u06cc \u062a\u0648\u0627\u0646\u0646\u062f \u0646\u062a\u0627\u06cc\u062c \u0634\u0645\u0627 \u0631\u0627 \u062a\u063a\u06cc\u06cc\u0631 \u062f\u0647\u0646\u062f\u060c \u062e\u0637\u0627 \u0627\u06cc\u062c\u0627\u062f \u06a9\u0646\u0646\u062f \u0648 \u0628\u0647 \u0637\u0648\u0631 \u06a9\u0644\u06cc \u0632\u0646\u062f\u06af\u06cc \u0634\u0645\u0627 \u0631\u0627 \u0628\u0647 \u0639\u0646\u0648\u0627\u0646 \u06cc\u06a9 \u062a\u0648\u0633\u0639\u0647 \u062f\u0647\u0646\u062f\u0647 \u062f\u0634\u0648\u0627\u0631\u062a\u0631 \u06a9\u0646\u0646\u062f.  \u0628\u0647 \u0639\u0646\u0648\u0627\u0646 \u0645\u062b\u0627\u0644\u060c \u0627\u06af\u0631 \u0645\u06cc\u0627\u0646\u06af\u06cc\u0646 \u0644\u06cc\u0633\u062a\u06cc \u0627\u0632 \u0627\u0639\u062f\u0627\u062f \u0631\u0627 \u0645\u062d\u0627\u0633\u0628\u0647 \u0645\u06cc\u200c\u06a9\u0646\u06cc\u062f \u0648 \u0645\u0642\u062f\u0627\u0631 NaN \u0628\u0647 \u0635\u0648\u0631\u062a \u0645\u062e\u0641\u06cc\u0627\u0646\u0647 \u0648\u0627\u0631\u062f \u0645\u06cc\u200c\u0634\u0648\u062f\u060c \u0628\u062f\u0648\u0646 \u062f\u0631 \u0646\u0638\u0631 \u06af\u0631\u0641\u062a\u0646 \u0633\u0627\u06cc\u0631 \u0627\u0639\u062f\u0627\u062f\u060c \u0646\u062a\u06cc\u062c\u0647 \u0634\u0645\u0627 \u0646\u06cc\u0632 NaN \u062e\u0648\u0627\u0647\u062f \u0628\u0648\u062f.  \u062a\u0642\u0631\u06cc\u0628\u0627\u064b \u0628\u0647 \u0646\u0638\u0631 \u0645\u06cc \u0631\u0633\u062f \u06a9\u0647 \u0646\u062a\u06cc\u062c\u0647 \u0631\u0627 &#8220;\u0645\u0633\u0645\u0648\u0645&#8221; \u0645\u06cc \u06a9\u0646\u062f &#8211; \u06cc\u06a9 NaN \u0645\u06cc \u062a\u0648\u0627\u0646\u062f \u0647\u0645\u0647 \u0686\u06cc\u0632 \u0631\u0627 \u0627\u0632 \u0628\u06cc\u0646 \u0628\u0628\u0631\u062f.<\/p>\n<div class=\"alert alert-note\">\n<div class=\"flex\">\n<div class=\"flex-shrink-0 mr-3\"><\/div>\n<div class=\"w-full\">\n<p><strong>\u062a\u0648\u062c\u0647 \u062f\u0627\u0634\u062a\u0647 \u0628\u0627\u0634\u06cc\u062f:<\/strong> NaN \u0645\u062e\u0641\u0641 &#8220;\u0639\u062f\u062f \u0646\u06cc\u0633\u062a&#8221;.  \u0627\u06cc\u0646 \u06cc\u06a9 \u0645\u0642\u062f\u0627\u0631 \u0645\u0645\u06cc\u0632 \u0634\u0646\u0627\u0648\u0631 \u0648\u06cc\u0698\u0647 \u0627\u0633\u062a \u06a9\u0647 \u0646\u0645\u06cc \u062a\u0648\u0627\u0646\u062f \u0628\u0647 \u0646\u0648\u0639 \u062f\u06cc\u06af\u0631\u06cc \u063a\u06cc\u0631 \u0627\u0632 float \u062a\u0628\u062f\u06cc\u0644 \u0634\u0648\u062f.<\/p>\n<\/p><\/div><\/div><\/div>\n<h3 id=\"nanvaluesinmathematicaloperations\"><span class=\"ez-toc-section\" id=\"%d9%85%d9%82%d8%a7%d8%af%db%8c%d8%b1_nan_%d8%af%d8%b1_%d8%b9%d9%85%d9%84%db%8c%d8%a7%d8%aa_%d8%b1%db%8c%d8%a7%d8%b6%db%8c\"><\/span>\u0645\u0642\u0627\u062f\u06cc\u0631 NaN \u062f\u0631 \u0639\u0645\u0644\u06cc\u0627\u062a \u0631\u06cc\u0627\u0636\u06cc<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0647\u0646\u06af\u0627\u0645 \u0627\u0646\u062c\u0627\u0645 \u0639\u0645\u0644\u06cc\u0627\u062a \u0631\u06cc\u0627\u0636\u06cc\u060c \u0645\u0642\u0627\u062f\u06cc\u0631 NaN \u0645\u06cc \u062a\u0648\u0627\u0646\u062f \u0645\u0634\u06a9\u0644\u0627\u062a \u0632\u06cc\u0627\u062f\u06cc \u0627\u06cc\u062c\u0627\u062f \u06a9\u0646\u062f.  \u0622\u0646\u0647\u0627 \u0645\u06cc \u062a\u0648\u0627\u0646\u0646\u062f \u0645\u0646\u062c\u0631 \u0628\u0647 \u0646\u062a\u0627\u06cc\u062c \u063a\u06cc\u0631\u0645\u0646\u062a\u0638\u0631\u0647 \u06cc\u0627 \u062d\u062a\u06cc \u062e\u0637\u0627\u0647\u0627 \u0634\u0648\u0646\u062f.  \u067e\u0627\u06cc\u062a\u0648\u0646 <code>math<\/code> \u0648 <code>numpy<\/code> \u06a9\u062a\u0627\u0628\u062e\u0627\u0646\u0647 \u0647\u0627 \u0645\u0639\u0645\u0648\u0644\u0627\u064b \u0645\u0642\u0627\u062f\u06cc\u0631 NaN \u0631\u0627 \u062f\u0631 \u0639\u0645\u0644\u06cc\u0627\u062a \u0631\u06cc\u0627\u0636\u06cc \u0645\u0646\u062a\u0634\u0631 \u0645\u06cc \u06a9\u0646\u0646\u062f \u06a9\u0647 \u0645\u06cc \u062a\u0648\u0627\u0646\u062f \u0645\u0646\u062c\u0631 \u0628\u0647 \u0628\u06cc \u0627\u0639\u062a\u0628\u0627\u0631 \u0634\u062f\u0646 \u06a9\u0644 \u0645\u062d\u0627\u0633\u0628\u0627\u062a \u0634\u0648\u062f.<\/p>\n<p>\u0628\u0647 \u0639\u0646\u0648\u0627\u0646 \u0645\u062b\u0627\u0644\u060c \u062f\u0631 <code>numpy<\/code>\u060c \u0647\u0631 \u0639\u0645\u0644\u06cc\u0627\u062a \u062d\u0633\u0627\u0628\u06cc \u0634\u0627\u0645\u0644 \u0645\u0642\u062f\u0627\u0631 NaN \u0628\u0647 NaN \u0645\u0646\u062c\u0631 \u0645\u06cc \u0634\u0648\u062f:<\/p>\n<pre><code class=\"hljs\"><span class=\"hljs-keyword\">import<\/span> numpy <span class=\"hljs-keyword\">as<\/span> np\n\na = np.array((<span class=\"hljs-number\">1<\/span>, <span class=\"hljs-number\">2<\/span>, np.nan))\n<span class=\"hljs-built_in\">print<\/span>(a.<span class=\"hljs-built_in\">sum<\/span>())\n<\/code><\/pre>\n<p>\u062e\u0631\u0648\u062c\u06cc:<\/p>\n<pre><code class=\"hljs\">nan\n<\/code><\/pre>\n<p>\u062f\u0631 \u0686\u0646\u06cc\u0646 \u0645\u0648\u0627\u0631\u062f\u06cc\u060c \u0645\u0645\u06a9\u0646 \u0627\u0633\u062a \u0628\u062e\u0648\u0627\u0647\u06cc\u062f \u0627\u0632 \u062a\u0648\u0627\u0628\u0639\u06cc \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0646\u06cc\u062f \u06a9\u0647 \u0645\u06cc \u062a\u0648\u0627\u0646\u0646\u062f \u0645\u0642\u0627\u062f\u06cc\u0631 NaN \u0631\u0627 \u0628\u0647 \u0637\u0648\u0631 \u0645\u0646\u0627\u0633\u0628 \u0645\u062f\u06cc\u0631\u06cc\u062a \u06a9\u0646\u0646\u062f.  Numpy \u0641\u0631\u0627\u0647\u0645 \u0645\u06cc \u06a9\u0646\u062f <code>nansum()<\/code>\u060c <code>nanmean()<\/code>\u0648 \u062f\u06cc\u06af\u0631\u0627\u0646\u060c \u06a9\u0647 \u0645\u0642\u0627\u062f\u06cc\u0631 NaN \u0631\u0627 \u0646\u0627\u062f\u06cc\u062f\u0647 \u0645\u06cc \u06af\u06cc\u0631\u0646\u062f:<\/p>\n<pre><code class=\"hljs\"><span class=\"hljs-built_in\">print<\/span>(np.nansum(a))\n<\/code><\/pre>\n<p>\u062e\u0631\u0648\u062c\u06cc:<\/p>\n<pre><code class=\"hljs\">3.0\n<\/code><\/pre>\n<p>\u0627\u0632 \u0633\u0648\u06cc \u062f\u06cc\u06af\u0631\u060c \u067e\u0627\u0646\u062f\u0627\u0647\u0627 \u0645\u0639\u0645\u0648\u0644\u0627\u064b \u0645\u0642\u0627\u062f\u06cc\u0631 NaN \u0631\u0627 \u062f\u0631 \u0639\u0645\u0644\u06cc\u0627\u062a \u0631\u06cc\u0627\u0636\u06cc \u062e\u0648\u062f \u0628\u0647 \u0637\u0648\u0631 \u067e\u06cc\u0634\u200c\u0641\u0631\u0636 \u0645\u0633\u062a\u062b\u0646\u06cc \u0645\u06cc\u200c\u06a9\u0646\u0646\u062f.<\/p>\n<h2 id=\"howtocheckfornanvaluesinpython\"><span class=\"ez-toc-section\" id=\"%d9%86%d8%ad%d9%88%d9%87_%d8%a8%d8%b1%d8%b1%d8%b3%db%8c_%d9%85%d9%82%d8%a7%d8%af%db%8c%d8%b1_nan_%d8%af%d8%b1_%d9%be%d8%a7%db%8c%d8%aa%d9%88%d9%86\"><\/span>\u0646\u062d\u0648\u0647 \u0628\u0631\u0631\u0633\u06cc \u0645\u0642\u0627\u062f\u06cc\u0631 NaN \u062f\u0631 \u067e\u0627\u06cc\u062a\u0648\u0646<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u0631\u0627\u0647 \u0647\u0627\u06cc \u0632\u06cc\u0627\u062f\u06cc \u0628\u0631\u0627\u06cc \u0628\u0631\u0631\u0633\u06cc \u0645\u0642\u0627\u062f\u06cc\u0631 NaN \u062f\u0631 \u067e\u0627\u06cc\u062a\u0648\u0646 \u0648\u062c\u0648\u062f \u062f\u0627\u0631\u062f \u0648 \u0645\u0627 \u0628\u0631\u062e\u06cc \u0627\u0632 \u0645\u062a\u062f\u0627\u0648\u0644 \u062a\u0631\u06cc\u0646 \u0631\u0648\u0634 \u0647\u0627\u06cc \u0645\u0648\u0631\u062f \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u062f\u0631 \u06a9\u062a\u0627\u0628\u062e\u0627\u0646\u0647 \u0647\u0627\u06cc \u0645\u062e\u062a\u0644\u0641 \u0631\u0627 \u067e\u0648\u0634\u0634 \u062e\u0648\u0627\u0647\u06cc\u0645 \u062f\u0627\u062f.  \u0628\u06cc\u0627\u06cc\u06cc\u062f \u0628\u0627 \u062f\u0627\u062e\u0644\u06cc \u0634\u0631\u0648\u0639 \u06a9\u0646\u06cc\u0645 <code>math<\/code> \u06a9\u062a\u0627\u0628\u062e\u0627\u0646\u0647<\/p>\n<h3 id=\"usingthemathisnanfunction\"><span class=\"ez-toc-section\" id=\"%d8%a8%d8%a7_%d8%a7%d8%b3%d8%aa%d9%81%d8%a7%d8%af%d9%87_%d8%a7%d8%b2_mathisnan_%d8%aa%d8%a7%d8%a8%d8%b9\"><\/span>\u0628\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 <em>math.isnan()<\/em> \u062a\u0627\u0628\u0639<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0631\u0627 <code>math.isnan()<\/code> \u062a\u0627\u0628\u0639 \u06cc\u06a9 \u0631\u0627\u0647 \u0622\u0633\u0627\u0646 \u0628\u0631\u0627\u06cc \u0628\u0631\u0631\u0633\u06cc NaN \u0628\u0648\u062f\u0646 \u06cc\u06a9 \u0645\u0642\u062f\u0627\u0631 \u0627\u0633\u062a.  \u0627\u06cc\u0646 \u062a\u0627\u0628\u0639 \u0628\u0631\u0645\u06cc \u06af\u0631\u062f\u062f <code>True<\/code> \u0627\u06af\u0631 \u0645\u0642\u062f\u0627\u0631 NaN \u0648 <code>False<\/code> \u062f\u0631 \u063a\u06cc\u0631 \u0627\u06cc\u0646 \u0635\u0648\u0631\u062a.  \u062f\u0631 \u0627\u06cc\u0646\u062c\u0627 \u06cc\u06a9 \u0645\u062b\u0627\u0644 \u0633\u0627\u062f\u0647 \u0622\u0648\u0631\u062f\u0647 \u0634\u062f\u0647 \u0627\u0633\u062a:<\/p>\n<pre><code class=\"hljs\"><span class=\"hljs-keyword\">import<\/span> math\n\nvalue = <span class=\"hljs-built_in\">float<\/span>(<span class=\"hljs-string\">'nan'<\/span>)\n<span class=\"hljs-built_in\">print<\/span>(math.isnan(value))  <span class=\"hljs-comment\"># True<\/span>\n\nvalue = <span class=\"hljs-number\">5<\/span>\n<span class=\"hljs-built_in\">print<\/span>(math.isnan(value))  <span class=\"hljs-comment\"># False<\/span>\n<\/code><\/pre>\n<div data-nosnippet=\"\" id=\"newsletter\">\n<div class=\"bg-gray-100 border rounded my-8\">\n<div class=\"py-3 px-3 sm:px-4 lg:py-6 lg:px-6\">\n<div class=\"text-center\"><span class=\"text-xl font-extrabold tracking-tight text-gray-600 sm:text-2xl\">\u062f\u0648\u0631\u0647 \u0647\u0627\u06cc \u0631\u0627\u06cc\u06af\u0627\u0646\u060c \u067e\u0631\u0648\u0698\u0647 \u0647\u0627\u06cc \u0647\u062f\u0627\u06cc\u062a \u0634\u062f\u0647 \u0648 \u0645\u0648\u0627\u0631\u062f \u062f\u06cc\u06af\u0631 \u0631\u0627 \u062f\u0631\u06cc\u0627\u0641\u062a \u06a9\u0646\u06cc\u062f<\/span><\/div>\n<div class=\"mt-4\">\n<div class=\"flex justify-center\">\n<div class=\"flex-grow flex-col justify-center\">\n<form class=\"group sm:flex sm:justify-center\"><label for=\"email-address\" class=\"sr-only\">\u0622\u062f\u0631\u0633 \u0627\u06cc\u0645\u06cc\u0644<\/label><input id=\"email-address\" name=\"email-address\" type=\"email\" autocomplete=\"email\" required=\"\" class=\"flex-1 w-full sm:max-w-md px-5 py-3 border sm:border-r-0 border-gray-400 placeholder-gray-500 rounded-md sm:rounded-r-none sm:rounded-l-md focus:ring-0 focus:border-gray-900\" placeholder=\"Enter your email\" value=\"\"><\/p>\n<div class=\"mt-3 sm:mt-0 sm:flex-shrink-0\"><button type=\"submit\" class=\"w-full flex items-center justify-center px-5 py-3 rounded-md sm:rounded-l-none sm:rounded-r-md shadow border border-transparent text-base font-medium text-white bg-orange-500 hover:bg-orange-600\">\u0627\u0634\u062a\u0631\u0627\u06a9 \u062f\u0631<\/button><\/div>\n<\/form>\n<p class=\"text-center mt-3 text-sm text-gray-500\">\u0628\u062f\u0648\u0646 \u0647\u0631\u0632\u0646\u0627\u0645\u0647 \u0647\u0631\u06af\u0632.  \u0644\u063a\u0648 \u0627\u0634\u062a\u0631\u0627\u06a9 \u062f\u0631 \u0647\u0631 \u0632\u0645\u0627\u0646.  \u0645\u0627 \u0631\u0627 \u0628\u062e\u0648\u0627\u0646\u06cc\u062f<!-- --> \u0633\u06cc\u0627\u0633\u062a \u062d\u0641\u0638 \u062d\u0631\u06cc\u0645 \u062e\u0635\u0648\u0635\u06cc.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<p>\u0647\u0645\u0627\u0646\u0637\u0648\u0631 \u06a9\u0647 \u0645\u06cc \u0628\u06cc\u0646\u06cc\u062f\u060c \u0648\u0642\u062a\u06cc \u06cc\u06a9 \u0645\u0642\u062f\u0627\u0631 NaN \u0631\u0627 \u0628\u0647 \u0639\u062f\u062f \u0627\u0631\u0633\u0627\u0644 \u0645\u06cc \u06a9\u0646\u06cc\u0645 <code>math.isnan()<\/code> \u062a\u0627\u0628\u0639\u060c \u0622\u0646 \u0631\u0627 \u0628\u0631\u0645\u06cc \u06af\u0631\u062f\u0627\u0646\u062f <code>True<\/code>.  \u0648\u0642\u062a\u06cc \u06cc\u06a9 \u0645\u0642\u062f\u0627\u0631 \u063a\u06cc\u0631 NaN \u0631\u0627 \u0627\u0631\u0633\u0627\u0644 \u0645\u06cc \u06a9\u0646\u06cc\u0645\u060c \u0628\u0631\u0645\u06cc \u06af\u0631\u062f\u062f <code>False<\/code>.<\/p>\n<p>\u0645\u0632\u06cc\u062a \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u0627\u06cc\u0646 \u062a\u0627\u0628\u0639 \u062e\u0627\u0635 \u0627\u06cc\u0646 \u0627\u0633\u062a \u06a9\u0647 <code>math<\/code> \u0645\u0627\u0698\u0648\u0644 \u062f\u0631 \u067e\u0627\u06cc\u062a\u0648\u0646 \u062a\u0639\u0628\u06cc\u0647 \u0634\u062f\u0647 \u0627\u0633\u062a\u060c \u0628\u0646\u0627\u0628\u0631\u0627\u06cc\u0646 \u0646\u06cc\u0627\u0632\u06cc \u0628\u0647 \u0646\u0635\u0628 \u0628\u0633\u062a\u0647 \u0647\u0627\u06cc \u0634\u062e\u0635 \u062b\u0627\u0644\u062b \u0646\u06cc\u0633\u062a.<\/p>\n<h3 id=\"usingthenumpyisnanfunction\"><span class=\"ez-toc-section\" id=\"%d8%a8%d8%a7_%d8%a7%d8%b3%d8%aa%d9%81%d8%a7%d8%af%d9%87_%d8%a7%d8%b2_numpyisnan_%d8%aa%d8%a7%d8%a8%d8%b9\"><\/span>\u0628\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 <em>numpy.isnan()<\/em> \u062a\u0627\u0628\u0639<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0627\u06af\u0631 \u0628\u0627 \u0622\u0631\u0627\u06cc\u0647 \u0647\u0627 \u06cc\u0627 \u0645\u0627\u062a\u0631\u06cc\u0633 \u0647\u0627 \u06a9\u0627\u0631 \u0645\u06cc \u06a9\u0646\u06cc\u062f\u060c <code>numpy.isnan()<\/code> \u062a\u0627\u0628\u0639 \u0646\u06cc\u0632 \u0645\u06cc \u062a\u0648\u0627\u0646\u062f \u0627\u0628\u0632\u0627\u0631 \u062e\u0648\u0628\u06cc \u0628\u0627\u0634\u062f.  \u0627\u0632 \u0646\u0638\u0631 \u0639\u0646\u0635\u0631 \u0631\u0648\u06cc \u06cc\u06a9 \u0622\u0631\u0627\u06cc\u0647 \u0639\u0645\u0644 \u0645\u06cc \u06a9\u0646\u062f \u0648 \u06cc\u06a9 \u0622\u0631\u0627\u06cc\u0647 \u0628\u0648\u0644\u06cc \u0628\u0647 \u0647\u0645\u0627\u0646 \u0634\u06a9\u0644 \u0631\u0627 \u0628\u0631\u0645\u06cc \u06af\u0631\u062f\u0627\u0646\u062f.  \u062f\u0631 \u0627\u06cc\u0646\u062c\u0627 \u06cc\u06a9 \u0645\u062b\u0627\u0644 \u0627\u0633\u062a:<\/p>\n<pre><code class=\"hljs\"><span class=\"hljs-keyword\">import<\/span> numpy <span class=\"hljs-keyword\">as<\/span> np\n\narray = np.array((<span class=\"hljs-number\">1<\/span>, np.nan, <span class=\"hljs-number\">3<\/span>, np.nan))\n<span class=\"hljs-built_in\">print<\/span>(np.isnan(array))\n<span class=\"hljs-comment\"># array((False,  True, False,  True))<\/span>\n<\/code><\/pre>\n<p>\u062f\u0631 \u0627\u06cc\u0646 \u0645\u062b\u0627\u0644\u060c \u06cc\u06a9 \u0622\u0631\u0627\u06cc\u0647 \u0628\u0627 \u062f\u0648 \u0645\u0642\u062f\u0627\u0631 NaN \u062f\u0627\u0631\u06cc\u0645.  \u0648\u0642\u062a\u06cc \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc \u06a9\u0646\u06cc\u0645 <code>numpy.isnan()<\/code>\u060c \u06cc\u06a9 \u0622\u0631\u0627\u06cc\u0647 \u0628\u0648\u0644\u06cc \u0631\u0627 \u062f\u0631 \u0622\u0646\u062c\u0627 \u0628\u0631\u0645\u06cc \u06af\u0631\u062f\u0627\u0646\u062f <code>True<\/code> \u0645\u0637\u0627\u0628\u0642 \u0628\u0627 \u0645\u0648\u0642\u0639\u06cc\u062a \u0645\u0642\u0627\u062f\u06cc\u0631 NaN \u062f\u0631 \u0622\u0631\u0627\u06cc\u0647 \u0627\u0635\u0644\u06cc \u0627\u0633\u062a.<\/p>\n<p>\u0632\u0645\u0627\u0646\u06cc \u06a9\u0647 \u0627\u0632 NumPy \u062f\u0631 \u06a9\u062f \u062e\u0648\u062f \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc \u06a9\u0646\u06cc\u062f \u0648 \u0628\u0647 \u062a\u0627\u0628\u0639\u06cc \u0646\u06cc\u0627\u0632 \u062f\u0627\u0631\u06cc\u062f \u06a9\u0647 \u0628\u0627 \u0633\u0627\u06cc\u0631 \u0633\u0627\u062e\u062a\u0627\u0631\u0647\u0627\u06cc NumPy \u0628\u0647 \u062e\u0648\u0628\u06cc \u06a9\u0627\u0631 \u06a9\u0646\u062f\u060c \u0645\u06cc \u062e\u0648\u0627\u0647\u06cc\u062f \u0627\u0632 \u0627\u06cc\u0646 \u0631\u0648\u0634 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0646\u06cc\u062f. <code>np.array<\/code>.<\/p>\n<h3 id=\"usingthepandasisnullfunction\"><span class=\"ez-toc-section\" id=\"%d8%a8%d8%a7_%d8%a7%d8%b3%d8%aa%d9%81%d8%a7%d8%af%d9%87_%d8%a7%d8%b2_pandasisnull_%d8%aa%d8%a7%d8%a8%d8%b9\"><\/span>\u0628\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 <em>pandas.isnull()<\/em> \u062a\u0627\u0628\u0639<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Pandas \u06cc\u06a9 \u0639\u0645\u0644\u06a9\u0631\u062f \u0622\u0633\u0627\u0646 \u0628\u0631\u0627\u06cc \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0631\u0627 \u0627\u0631\u0627\u0626\u0647 \u0645\u06cc \u062f\u0647\u062f\u060c <code>isnull()<\/code>\u060c \u0628\u0631\u0627\u06cc \u0628\u0631\u0631\u0633\u06cc \u0645\u0642\u0627\u062f\u06cc\u0631 NaN \u062f\u0631 DataFrame \u06cc\u0627 Series.  \u0628\u06cc\u0627\u06cc\u06cc\u062f \u0628\u0647 \u06cc\u06a9 \u0645\u062b\u0627\u0644 \u0646\u06af\u0627\u0647 \u06a9\u0646\u06cc\u0645:<\/p>\n<pre><code class=\"hljs\"><span class=\"hljs-keyword\">import<\/span> pandas <span class=\"hljs-keyword\">as<\/span> pd\n\n<span class=\"hljs-comment\"># Create a DataFrame with NaN values<\/span>\ndf = pd.DataFrame({<span class=\"hljs-string\">'A'<\/span>: (<span class=\"hljs-number\">1<\/span>, <span class=\"hljs-number\">2<\/span>, np.nan), <span class=\"hljs-string\">'B'<\/span>: (<span class=\"hljs-number\">5<\/span>, np.nan, np.nan), <span class=\"hljs-string\">'C'<\/span>: (<span class=\"hljs-number\">1<\/span>, <span class=\"hljs-number\">2<\/span>, <span class=\"hljs-number\">3<\/span>)})\n\n<span class=\"hljs-built_in\">print<\/span>(df.isnull())\n<\/code><\/pre>\n<p>\u062e\u0631\u0648\u062c\u06cc \u06cc\u06a9 DataFrame \u062e\u0648\u0627\u0647\u062f \u0628\u0648\u062f \u06a9\u0647 \u0646\u0633\u062e\u0647 \u0627\u0635\u0644\u06cc \u0631\u0627 \u0645\u0646\u0639\u06a9\u0633 \u0645\u06cc \u06a9\u0646\u062f\u060c \u0627\u0645\u0627 \u0628\u0627 <code>True<\/code> \u0628\u0631\u0627\u06cc \u0645\u0642\u0627\u062f\u06cc\u0631 NaN \u0648 <code>False<\/code> \u0628\u0631\u0627\u06cc \u0645\u0642\u0627\u062f\u06cc\u0631 \u063a\u06cc\u0631 NaN:<\/p>\n<pre><code class=\"hljs\">       A      B      C\n0  False  False  False\n1  False   True  False\n2   True   True  False\n<\/code><\/pre>\n<p>\u0646\u06a9\u062a\u0647 \u0627\u06cc \u06a9\u0647 \u0627\u06af\u0631 \u0627\u06cc\u0646 \u0631\u0648\u0634 \u0631\u0627 \u0622\u0632\u0645\u0627\u06cc\u0634 \u06a9\u0646\u06cc\u062f \u0645\u062a\u0648\u062c\u0647 \u062e\u0648\u0627\u0647\u06cc\u062f \u0634\u062f \u0627\u06cc\u0646 \u0627\u0633\u062a \u06a9\u0647 \u0622\u0646 \u0646\u06cc\u0632 \u0628\u0631\u0645\u06cc \u06af\u0631\u062f\u062f <code>True<\/code> \u0628\u0631\u0627\u06cc <code>None<\/code> \u0627\u0631\u0632\u0634 \u0647\u0627\u060c \u0627\u0632 \u0627\u06cc\u0646 \u0631\u0648 \u0686\u0631\u0627 \u0628\u0647 \u0622\u0646 \u0627\u0634\u0627\u0631\u0647 \u062f\u0627\u0631\u062f <code>null<\/code> \u062f\u0631 \u0646\u0627\u0645 \u0631\u0648\u0634  \u0628\u0627\u0632 \u0645\u06cc \u06af\u0631\u062f\u062f <code>True<\/code> \u0628\u0631\u0627\u06cc \u0647\u0631\u062f\u0648 <code>NaN<\/code> <em>\u0648<\/em> <code>None<\/code>.<\/p>\n<h2 id=\"comparingthedifferentmethods\"><span class=\"ez-toc-section\" id=\"%d9%85%d9%82%d8%a7%db%8c%d8%b3%d9%87_%d8%b1%d9%88%d8%b4_%d9%87%d8%a7%db%8c_%d9%85%d8%ae%d8%aa%d9%84%d9%81\"><\/span>\u0645\u0642\u0627\u06cc\u0633\u0647 \u0631\u0648\u0634 \u0647\u0627\u06cc \u0645\u062e\u062a\u0644\u0641<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u0647\u0631 \u0631\u0648\u0634\u06cc \u06a9\u0647 \u0628\u062d\u062b \u06a9\u0631\u062f\u06cc\u0645 &#8211; <code>math.isnan()<\/code>\u060c <code>numpy.isnan()<\/code>\u060c \u0648 <code>pandas.isnull()<\/code> &#8211; \u0646\u0642\u0627\u0637 \u0642\u0648\u062a \u0648 \u0645\u0648\u0627\u0631\u062f \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u062e\u0627\u0635 \u062e\u0648\u062f \u0631\u0627 \u062f\u0627\u0631\u062f.  \u0631\u0627 <code>math.isnan()<\/code> \u062a\u0627\u0628\u0639 \u06cc\u06a9 \u0631\u0627\u0647 \u0633\u0627\u062f\u0647 \u0628\u0631\u0627\u06cc \u0628\u0631\u0631\u0633\u06cc NaN \u0628\u0648\u062f\u0646 \u06cc\u06a9 \u0639\u062f\u062f \u0627\u0633\u062a\u060c \u0627\u0645\u0627 \u0641\u0642\u0637 \u0631\u0648\u06cc \u0627\u0639\u062f\u0627\u062f \u062c\u062f\u0627\u06af\u0627\u0646\u0647 \u06a9\u0627\u0631 \u0645\u06cc \u06a9\u0646\u062f.<\/p>\n<p>\u0627\u0632 \u0633\u0648\u06cc \u062f\u06cc\u06af\u0631\u060c <code>numpy.isnan()<\/code> \u0627\u0632 \u0646\u0638\u0631 \u0639\u0646\u0627\u0635\u0631 \u0631\u0648\u06cc \u0622\u0631\u0627\u06cc\u0647 \u0647\u0627 \u0639\u0645\u0644 \u0645\u06cc \u06a9\u0646\u062f \u0648 \u0622\u0646 \u0631\u0627 \u0628\u0647 \u0627\u0646\u062a\u062e\u0627\u0628 \u062e\u0648\u0628\u06cc \u0628\u0631\u0627\u06cc \u0628\u0631\u0631\u0633\u06cc \u0645\u0642\u0627\u062f\u06cc\u0631 NaN \u062a\u0628\u062f\u06cc\u0644 \u0645\u06cc \u06a9\u0646\u062f <code>numpy<\/code> \u0622\u0631\u0627\u06cc\u0647 \u0647\u0627<\/p>\n<p>\u0633\u0631\u0627\u0646\u062c\u0627\u0645\u060c <code>pandas.isnull()<\/code> \u0628\u0631\u0627\u06cc \u0628\u0631\u0631\u0633\u06cc \u0645\u0642\u0627\u062f\u06cc\u0631 NaN \u062f\u0631 \u0627\u0634\u06cc\u0627\u0621 \u0633\u0631\u06cc \u067e\u0627\u0646\u062f\u0627\u0647\u0627 \u06cc\u0627 DataFrame \u0645\u0646\u0627\u0633\u0628 \u0627\u0633\u062a.  \u0634\u0627\u06cc\u0627\u0646 \u0630\u06a9\u0631 \u0627\u0633\u062a \u06a9\u0647 <code>pandas.isnull()<\/code> \u0631\u0627 \u0646\u06cc\u0632 \u062f\u0631 \u0646\u0638\u0631 \u0645\u06cc \u06af\u06cc\u0631\u062f <code>None<\/code> \u0628\u0647 \u0639\u0646\u0648\u0627\u0646 NaN\u060c \u06a9\u0647 \u0645\u06cc \u062a\u0648\u0627\u0646\u062f \u062f\u0631 \u0647\u0646\u06af\u0627\u0645 \u0628\u0631\u062e\u0648\u0631\u062f \u0628\u0627 \u062f\u0627\u062f\u0647 \u0647\u0627\u06cc \u062f\u0646\u06cc\u0627\u06cc \u0648\u0627\u0642\u0639\u06cc \u0628\u0633\u06cc\u0627\u0631 \u0645\u0641\u06cc\u062f \u0628\u0627\u0634\u062f.<\/p>\n<h2 id=\"conclusion\"><span class=\"ez-toc-section\" id=\"%d9%86%d8%aa%db%8c%d8%ac%d9%87\"><\/span>\u0646\u062a\u06cc\u062c\u0647<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u0628\u0631\u0631\u0633\u06cc \u0645\u0642\u0627\u062f\u06cc\u0631 NaN \u06cc\u06a9 \u0645\u0631\u062d\u0644\u0647 \u0645\u0647\u0645 \u062f\u0631 \u067e\u06cc\u0634 \u067e\u0631\u062f\u0627\u0632\u0634 \u062f\u0627\u062f\u0647 \u0647\u0627 \u0627\u0633\u062a.  \u0645\u0627 \u0633\u0647 \u0631\u0648\u0634 \u0631\u0627 \u0628\u0631\u0631\u0633\u06cc \u06a9\u0631\u062f\u0647 \u0627\u06cc\u0645 &#8211; <code>math.isnan()<\/code>\u060c <code>numpy.isnan()<\/code>\u060c \u0648 <code>pandas.isnull()<\/code> &#8211; \u0628\u0633\u062a\u0647 \u0628\u0647 \u0646\u0648\u0639 \u062f\u0627\u062f\u0647 \u0627\u06cc \u06a9\u0647 \u0628\u0627 \u0622\u0646 \u06a9\u0627\u0631 \u0645\u06cc \u06a9\u0646\u06cc\u062f\u060c \u0647\u0631 \u06a9\u062f\u0627\u0645 \u0646\u0642\u0627\u0637 \u0642\u0648\u062a \u062e\u0648\u062f \u0631\u0627 \u062f\u0627\u0631\u0646\u062f.<\/p>\n<p>\u0645\u0627 \u0647\u0645\u0686\u0646\u06cc\u0646 \u062f\u0631 \u0645\u0648\u0631\u062f \u062a\u0623\u062b\u06cc\u0631 \u0645\u0642\u0627\u062f\u06cc\u0631 NaN \u0628\u0631 \u0639\u0645\u0644\u06cc\u0627\u062a \u0631\u06cc\u0627\u0636\u06cc \u0648 \u0646\u062d\u0648\u0647 \u0645\u062f\u06cc\u0631\u06cc\u062a \u0622\u0646\u0647\u0627 \u0628\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u062a\u0648\u0627\u0628\u0639 numpy \u0648 pandas \u0628\u062d\u062b \u06a9\u0631\u062f\u0647\u200c\u0627\u06cc\u0645.<\/p>\n<\/div>\n<p><br \/>\n<br \/>\u0645\u0646\u062a\u0634\u0631 \u0634\u062f\u0647 \u062f\u0631 1402-12-27 01:46:04<br \/>\n<\/p>\n\n\n<div class=\"kk-star-ratings kksr-auto kksr-align-center kksr-valign-bottom\"\n    data-payload='{&quot;align&quot;:&quot;center&quot;,&quot;id&quot;:&quot;9862&quot;,&quot;slug&quot;:&quot;default&quot;,&quot;valign&quot;:&quot;bottom&quot;,&quot;ignore&quot;:&quot;&quot;,&quot;reference&quot;:&quot;auto&quot;,&quot;class&quot;:&quot;&quot;,&quot;count&quot;:&quot;1&quot;,&quot;legendonly&quot;:&quot;&quot;,&quot;readonly&quot;:&quot;&quot;,&quot;score&quot;:&quot;5&quot;,&quot;starsonly&quot;:&quot;&quot;,&quot;best&quot;:&quot;5&quot;,&quot;gap&quot;:&quot;5&quot;,&quot;greet&quot;:&quot;\u0627\u0645\u062a\u06cc\u0627\u0632 \u0634\u0645\u0627 \u0628\u0647 \u0627\u06cc\u0646 \u0645\u0637\u0644\u0628&quot;,&quot;legend&quot;:&quot;5\\\/5 (1 \u0631\u0627\u06cc)&quot;,&quot;size&quot;:&quot;30&quot;,&quot;title&quot;:&quot;\u0646\u062d\u0648\u0647 \u0628\u0631\u0631\u0633\u06cc \u0645\u0642\u0627\u062f\u06cc\u0631 NaN \u062f\u0631 \u067e\u0627\u06cc\u062a\u0648\u0646&quot;,&quot;width&quot;:&quot;172.5&quot;,&quot;_legend&quot;:&quot;{score}\\\/{best} ({count} \u0631\u0627\u06cc)&quot;,&quot;font_factor&quot;:&quot;1.25&quot;}'>\n            \n<div class=\"kksr-stars\">\n    \n<div class=\"kksr-stars-inactive\">\n            <div class=\"kksr-star\" data-star=\"1\" style=\"padding-left: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 30px; height: 30px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"2\" style=\"padding-left: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 30px; height: 30px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"3\" style=\"padding-left: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 30px; height: 30px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"4\" style=\"padding-left: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 30px; height: 30px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"5\" style=\"padding-left: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 30px; height: 30px;\"><\/div>\n        <\/div>\n    <\/div>\n    \n<div class=\"kksr-stars-active\" style=\"width: 172.5px;\">\n            <div class=\"kksr-star\" style=\"padding-left: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 30px; height: 30px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-left: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 30px; height: 30px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-left: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 30px; height: 30px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-left: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 30px; height: 30px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-left: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 30px; height: 30px;\"><\/div>\n        <\/div>\n    <\/div>\n<\/div>\n                \n\n<div class=\"kksr-legend\" style=\"font-size: 24px;\">\n            5\/5 (1 \u0631\u0627\u06cc)    <\/div>\n    <\/div>\n","protected":false},"excerpt":{"rendered":"<p><span class=\"span-reading-time rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\">\u0632\u0645\u0627\u0646 \u0644\u0627\u0632\u0645 \u0628\u0631\u0627\u06cc \u0645\u0637\u0627\u0644\u0639\u0647: <\/span> <span class=\"rt-time\"> 4<\/span> <span class=\"rt-label rt-postfix\">\u062f\u0642\u06cc\u0642\u0647<\/span><\/span>\u0645\u0639\u0631\u0641\u06cc \u0627\u0645\u0631\u0648\u0632 \u0642\u0635\u062f \u062f\u0627\u0631\u06cc\u0645 \u0646\u062d\u0648\u0647 \u0628\u0631\u0631\u0633\u06cc \u0645\u0642\u0627\u062f\u06cc\u0631 NaN (\u0646\u0647 \u06cc\u06a9 \u0639\u062f\u062f) \u0631\u0627 \u062f\u0631 \u067e\u0627\u06cc\u062a\u0648\u0646 \u0628\u0631\u0631\u0633\u06cc \u06a9\u0646\u06cc\u0645. \u0645\u0642\u0627\u062f\u06cc\u0631 NaN \u0645\u06cc \u062a\u0648\u0627\u0646\u062f \u0647\u0646\u06af\u0627\u0645 \u067e\u0631\u062f\u0627\u0632\u0634 \u062f\u0627\u062f\u0647 \u0647\u0627 \u0628\u0633\u06cc\u0627\u0631 \u0622\u0632\u0627\u0631\u062f\u0647\u0646\u062f\u0647 \u0628\u0627\u0634\u062f \u0648 \u062f\u0627\u0646\u0633\u062a\u0646 \u0646\u062d\u0648\u0647 \u0634\u0646\u0627\u0633\u0627\u06cc\u06cc \u0622\u0646\u0647\u0627 \u0645\u06cc \u062a\u0648\u0627\u0646\u062f \u0634\u0645\u0627 \u0631\u0627 \u0627\u0632 \u0628\u0633\u06cc\u0627\u0631\u06cc \u0627\u0632 \u0633\u0631\u062f\u0631\u062f\u0647\u0627\u06cc \u0627\u062d\u062a\u0645\u0627\u0644\u06cc \u062f\u0631 \u0645\u0633\u06cc\u0631 \u0646\u062c\u0627\u062a \u062f\u0647\u062f. \u0686\u0631\u0627 \u0628\u0631\u0631\u0633\u06cc \u0645\u0642\u0627\u062f\u06cc\u0631 NaN \u0645\u0647\u0645 \u0627\u0633\u062a \u0645\u0642\u0627\u062f\u06cc\u0631 NaN \u0645\u06cc \u062a\u0648\u0627\u0646\u062f [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":9043,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1772,620],"tags":[2390,1843,1252,1844,1970,1841,1744,1859,2325,1966,2323],"class_list":["post-9862","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-javascript","category-programming","tag-nan","tag-nodejs-hosting","tag--nodejs","tag-1844","tag-1970","tag-1841","tag-1744","tag---nodejs","tag-2325","tag--javascrip","tag--node"],"acf":[],"_links":{"self":[{"href":"https:\/\/rasanegaar.com\/blog\/wp-json\/wp\/v2\/posts\/9862","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/rasanegaar.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/rasanegaar.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/rasanegaar.com\/blog\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/rasanegaar.com\/blog\/wp-json\/wp\/v2\/comments?post=9862"}],"version-history":[{"count":0,"href":"https:\/\/rasanegaar.com\/blog\/wp-json\/wp\/v2\/posts\/9862\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/rasanegaar.com\/blog\/wp-json\/wp\/v2\/media\/9043"}],"wp:attachment":[{"href":"https:\/\/rasanegaar.com\/blog\/wp-json\/wp\/v2\/media?parent=9862"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/rasanegaar.com\/blog\/wp-json\/wp\/v2\/categories?post=9862"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/rasanegaar.com\/blog\/wp-json\/wp\/v2\/tags?post=9862"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}