{"id":4133,"date":"2023-10-24T18:59:33","date_gmt":"2023-10-24T13:29:33","guid":{"rendered":"https:\/\/python-programs.com\/?p=4133"},"modified":"2023-11-10T11:56:41","modified_gmt":"2023-11-10T06:26:41","slug":"python-string-replace-method","status":"publish","type":"post","link":"https:\/\/python-programs.com\/python-string-replace-method\/","title":{"rendered":"Python String \u2013 Replace() Method"},"content":{"rendered":"
A string is a character sequence. replace() is a built-in Python function that returns a copy of the string in which all occurrences of a substring are replaced with another substring.<\/p>\n Syntax:<\/strong><\/p>\n Parameters:<\/strong><\/p>\n Return:<\/strong> Assume we have a string, and now replace all occurrences of \u2018e\u2019 with \u2018q\u2019.<\/p>\n Below is the implementation:<\/strong><\/p>\n Output:<\/strong><\/p>\n Instead of replacing all occurrences of a character in a string, we can use the replace() function’s count argument to replace only the first few occurrences of a character.<\/p>\n Below is the implementation:<\/strong><\/p>\n Output:<\/strong><\/p>\n If we only want to replace the first occurrences of a substring in a string with another character or substring, we must use the replace() function with the count argument set to 1.<\/p>\n Below is the implementation:<\/strong><\/p>\n Output:<\/strong><\/p>\n Related Programs<\/strong>:<\/p>\n A string is a character sequence. A character is nothing more than a symbol. The English language, for example, has 26 characters. Computers do not work with characters, but rather with numbers (binary). Despite\u00a0the very fact\u00a0that you simply\u00a0see characters on your screen,\u00a0they’re\u00a0internally stored and manipulated as a series of 0s and 1s. Encoding is the …<\/p>\n
\nA character is nothing more than a symbol. The English language, for example, has 26 characters.
\nComputers do not work with characters, but rather with numbers (binary). Despite\u00a0the very fact\u00a0<\/span>that you simply\u00a0<\/span>see characters on your screen,\u00a0they’re\u00a0<\/span>internally stored and manipulated as a series of 0s and 1s.
\nEncoding is the process of converting a character to a number, and decoding is the reverse process. ASCII and Unicode are two of the most common encodings.
\nA string in Python\u00a0may be a\u00a0<\/span>sequence of Unicode characters. Unicode was created to include every character in all languages and to bring encoding uniformity. Python Unicode can teach you everything you need to know about Unicode.<\/p>\nString Replace() Function<\/h2>\n
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1)replace() function<\/h3>\n
given_string.replace(old, new, count)<\/pre>\n
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\nThis method returns a string copy\u00a0during which\u00a0<\/span>all occurrences of substring old are replaced with new. Only\u00a0the primary\u00a0<\/span>count occurrences are replaced if the optional argument max is provided.<\/p>\n2)Replace all instances of a character or string in a string:<\/h3>\n
# Function which replaces the string\r\ndef replaceString(string, oldstring, replacestring):\r\n # using replace\r\n resultstring = string.replace(oldstring, replacestring)\r\n\r\n # return the final string\r\n return resultstring\r\n\r\n\r\n# Driver code\r\n# given string\r\nstring = \"This is BTechGeeks new online learning platform\"\r\n# string which needs to be replaced\r\noldstring = 'e'\r\n# replacing string\/new string\r\nreplacestring = 't'\r\n# passing these strings to replaceString function\r\nprint(replaceString(string, oldstring, replacestring))\r\n<\/pre>\n
This is BTtchGttks ntw onlint ltarning platform<\/pre>\n
3)Replace only first two occurences of string:<\/h3>\n
# Function which replaces the string\r\ndef replaceMultipleString(string, oldstring, replacestring):\r\n # using replace\r\n # providing count =2\r\n resultstring = string.replace(oldstring, replacestring, 2)\r\n\r\n # return the final string\r\n return resultstring\r\n\r\n\r\n# Driver code\r\n# given string\r\nstring = \"Hello this is BTechGeeks\"\r\n# string which needs to be replaced\r\noldstring = 'e'\r\n# replacing string\/new string\r\nreplacestring = '$$$'\r\n# passing these strings to replaceMultipleString function\r\nprint(replaceMultipleString(string, oldstring, replacestring))\r\n<\/pre>\n
H$$$llo this is BT$$$chGeeks<\/pre>\n
4)Replace the first occurrence of a given substring in a string with another character<\/h3>\n
# Function which replaces the string\r\ndef replaceMultipleString(string, oldstring, replacestring):\r\n # using replace\r\n # providing count =2\r\n resultstring = string.replace(oldstring, replacestring, 1)\r\n\r\n # return the final string\r\n return resultstring\r\n\r\n\r\n# Driver code\r\n# given string\r\nstring = \"Hello this is BTechGeeks\"\r\n# string which needs to be replaced\r\noldstring = 'is'\r\n# replacing string\/new string\r\nreplacestring = 't'\r\n# passing these strings to replaceMultipleString function\r\nprint(replaceMultipleString(string, oldstring, replacestring))\r\n<\/pre>\n
Hello tht is BTechGeeks<\/pre>\n
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