{"id":28289,"date":"2022-08-30T10:50:04","date_gmt":"2022-08-30T05:20:04","guid":{"rendered":"https:\/\/python-programs.com\/?p=28289"},"modified":"2022-08-30T10:50:04","modified_gmt":"2022-08-30T05:20:04","slug":"difference-between-and-is-not-operator-in-python","status":"publish","type":"post","link":"https:\/\/python-programs.com\/difference-between-and-is-not-operator-in-python\/","title":{"rendered":"Difference between != and is not operator in Python"},"content":{"rendered":"
In this tutorial, let us look at the difference between !=<\/strong> and is not<\/strong> operator in Python.<\/p>\n !=<\/strong> is defined in Python as the not equal to operator. If the operands on either side are not equal, it returns True; otherwise, it returns False.<\/p>\n The is not<\/strong> operator checks whether the id() of two objects is the same or not. If they are the same, it returns False; otherwise, it returns True. And the is not<\/strong> operator returns True if the operands on either side are not equal, and False if they are.<\/p>\n Approach:<\/strong><\/p>\n Below is the implementation:<\/strong><\/p>\n Output:<\/strong><\/p>\n Explanation:<\/strong><\/p>\n Approach:<\/strong><\/p>\n Below is the implementation:<\/strong><\/p>\n Output:<\/strong><\/p>\n Explanation:<\/strong><\/p>\n Output:<\/strong><\/p>\n Explanation:<\/strong><\/p>\n Approach:<\/strong><\/p>\n Below is the implementation:<\/strong><\/p>\n Output:<\/strong><\/p>\n Approach:<\/strong><\/p>\n Below is the implementation:<\/strong><\/p>\n Output:<\/strong><\/p>\n Output:<\/strong><\/p>\n Output:<\/strong><\/p>\n Explanation:<\/strong><\/p>\n In this tutorial, let us look at the difference between != and is not operator in Python. != is defined in Python as the not equal to operator. If the operands on either side are not equal, it returns True; otherwise, it returns False. The is not operator checks whether the id() of two objects …<\/p>\nDifference between != and is not operator in Python<\/h2>\n
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Method #1: Using is not Operator on Numbers<\/h3>\n
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# Give the first number as static input and store it in a variable.\r\ngvn_num1 = 5\r\n# Give the second number as static input and store it in another variable.\r\ngvn_num2 = 5\r\n\r\n# Check if both the given numbers are equal or not using the is not operator\r\nprint(gvn_num1 is not gvn_num2)\r\n# Print the id of both the given numbers using the id() function\r\nprint(id(gvn_num1), id(gvn_num2))<\/pre>\n
False\r\n11256192 11256192<\/pre>\n
Here it returns the output as False since both variables\r\ngvn_num1 and gvn_num2 referred to the same data 5<\/pre>\n
Method #2: Using is not Operator on Strings<\/h3>\n
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# Give the first string as static input and store it in a variable.\r\ngvn_str1 = \"pythonprogarms\"\r\n# Give the second string as static input and store it in another variable.\r\ngvn_str2 = \"pythonprogarms\"\r\n\r\n# Check if both the given strings are equal using the is not operator\r\nprint(gvn_str1 is not gvn_str2)\r\n# Print the id of both the given strings using the id() function\r\nprint(id(gvn_str1), id(gvn_str2))<\/pre>\n
False\r\n140627397413232 140627397413232<\/pre>\n
Here it returns the output as False since both the string variables\r\ngvn_str1 and gvn_str2 referred to the same data \"pythonprogarms\"<\/pre>\n
Method #3: Using is not Operator on Lists<\/h3>\n
# Give the first list as static input and store it in a variable.\r\ngvn_lst1 = [10, 15, 20]\r\n# Give the second list as static input and store it in another variable.\r\ngvn_lst2 = [10, 15, 20]\r\n\r\n# Check if both the given lists are equal using the is not operator\r\nprint(gvn_lst1 is not gvn_lst2)\r\n# Print the id of both the given lists using the id() function\r\nprint(id(gvn_lst1), id(gvn_lst2))<\/pre>\n
True\r\n140627403656880 140627397425344<\/pre>\n
Here it returns the output as True since both the variables\r\ngvn_lst1 and gvn_lst2 have distinct memory addresses even if \r\nboth variables contain the same data.<\/pre>\n
Method #4: Using != Operators on Numbers<\/h3>\n
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# Give the first number as static input and store it in a variable.\r\ngvn_num1 = 5\r\n# Give the second number as static input and store it in another variable.\r\ngvn_num2 = 5\r\n\r\n# Check if both the given numbers are equal or not using the != operator\r\nprint(gvn_num1 != gvn_num2)\r\n# Print the id of both the given numbers using the id() function\r\nprint(id(gvn_num1), id(gvn_num2))<\/pre>\n
False\r\n11256192 11256192<\/pre>\n
Method #5: Using != Operators on Strings<\/h3>\n
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# Give the first string as static input and store it in a variable.\r\ngvn_str1 = \"pythonprogarms\"\r\n# Give the second string as static input and store it in another variable.\r\ngvn_str2 = \"pythonprogarms\"\r\n\r\n# Check if both the given strings are equal or not using the != operator\r\nprint(gvn_str1 != gvn_str2)\r\n# Print the id of both the given strings using the id() function\r\nprint(id(gvn_str1), id(gvn_str2))<\/pre>\n
False\r\n140627397413232 140627397413232<\/pre>\n
Method #6: Using != Operators on Lists<\/h3>\n
# Give the first list as static input and store it in a variable.\r\ngvn_lst1 = [10, 15, 20]\r\n# Give the second list as static input and store it in another variable.\r\ngvn_lst2 = [10, 15, 20]\r\n\r\n# Check if both the given lists are equal or not using the != operator\r\nprint(gvn_lst1 != gvn_lst2)\r\n# Print the id of both the given lists using the id() function\r\nprint(id(gvn_lst1), id(gvn_lst2))<\/pre>\n
False\r\n140627397115488 140627397114768<\/pre>\n
Method #7: Comparing != and is not operators<\/h3>\n
gvn_lst1 = []\r\ngvn_lst2 = []\r\ngvn_lst3 = gvn_lst1\r\n\r\n# Applying != operator for comparing gvn_lst1 and gvn_lst2\r\nif (gvn_lst1 != gvn_lst2):\r\n print(\"True\")\r\nelse:\r\n print(\"False\")\r\n \r\n# Applying is not operator for comparing gvn_lst1 and gvn_lst2\r\nif (gvn_lst1 is not gvn_lst2):\r\n print(\"True\")\r\nelse:\r\n print(\"False\")\r\n \r\n# Applying is not operator for comparing gvn_lst1 and gvn_lst3\r\nif (gvn_lst1 is not gvn_lst3):\r\n print(\"True\")\r\nelse:\r\n print(\"False\")\r\n\r\n# Concatenating given third and secondlists and saving it as a given third list\r\ngvn_lst3 = gvn_lst3 + gvn_lst2\r\n\r\n# Applying is not operator for comparing gvn_lst1 and gvn_lst3\r\nif (gvn_lst1 is not gvn_lst3):\r\n print(\"True\")\r\nelse:\r\n print(\"False\")\r\n<\/pre>\n
False\r\nTrue\r\nFalse\r\nTrue<\/pre>\n
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