Method | Description |
String capitalize() | Converts first Character to Capital Letter Return type of this method is String and the method is invoked using a String Object and takes no argument or parameter. str1="i am Indian" str2=str1.capitalize() str2 would be 'I am Indian' where str1 will remain the same ('i am Indian') For non alphabetic letter at the first position of the string, there will be no change. str1="# i am Indian" str2=str1.capitalize() str2 would be '# i am Indian' |
String center() | Pads string with specified character Return type of this method is String and the method is invoked using a string object and takes int value and character (optional) as arguments or parameters. This method returns the invoking string centered in width specified in first argument. Padding is done using the specified character passed as second argument, if any character is passed. Default filler character is a space. str = "Mera Bharat Mahan" print str.center(21, '#') The output would be : "##Mera Bharat Mahan##" Again the statement print str.center(21) would produce the output " Mera Bharat Mahan " |
String casefold() | converts to casefolded strings Return type of this method is string and the method is invoked using a string object. The casefold() method returns a string where all the characters are lower case. This method is similar to the lower() method, but the casefold() method is stronger, more aggressive, meaning that it will convert more characters into lower case. |
String count() | returns occurrences of substring in string Return type of this method is int, the method is invoked using a string object and takes argument (s) or parameters. Syntax of this method is string.count(substring, int start, int end): The second and third arguments are optional. 'string' is the invoking string from where the substring will be searched. 'substring' is the string which will be searched in 'string'. 'start' indicates the index from where search will be performed and 'end' is the end index of searching. If the second and third arguments are not passed, the searching will be performed on the entire string. |
boolean endswith() | Checks if String Ends with the Specified Suffix Return type of this method is boolean, the method is invoked using a string object and takes argument (s) or parameters. Syntax of this method is boolean endswith(substring, int start, int end): The second and third arguments are optional. 'string' is the invoking string from where the substring will be searched. 'substring' is the string which will be searched in 'string'. 'start' indicates the index from where search will be performed and 'end' is the end index of searching. If the second and third arguments are not passed, the searching will be performed on the entire string. If the search is successful, the method returns true otherwise false. str = "this is testing"; suffix = "testing"; print str.endswith(suffix) print str.endswith(suffix,20) suffix = "is"; print str.endswith(suffix, 2, 4) print str.endswith(suffix, 2, 6) Output True True True False |
String expandtabs() | Replaces Tab character With Spaces The expandtabs() method returns a copy of string with all tab characters '\t' replaced with whitespace characters. Return type of this method is string, the method is invoked using a string object and may or may not take parameter while invoking the method. If the method is invoked without parameter then each '\t' will be replaced by 8 whitespace characters otherwise the number of whitespace characters will be same as the integer value passed as argument. str = 'abc\txyz' result = str.expandtabs() print(result) Output abc xyz |
String encode() | returns encoded string of given string |
String find() | Returns the Lowest Index of Substring Return type of this method is integer, the method is invoked using a string object and takes a string, start index and end index as parameters. Second and third arguments are optional. The method searches the argument string in the invoking string and if found, it returns the first occurrence index otherwise returns -1. If the 2nd and 3rd arguments are passed, it will search the argument string within the specified indexes. str1 = 'Mata o mata' result = str1.find('mata') print("Substring 'mata':", result) result = str1.find('pita') print("Substring 'pita ':", result) Output 7 -1 |
String format() | formats string into nicer output |
String index() | Returns Index of Substring The index() method is similar to find() method for strings with the same return type and same argument list. The only difference is that find() method returns -1 if the substring is not found, whereas index() throws an exception. |
String isalnum() | Checks Alphanumeric Character Return type of this method is boolean (true or false). The method is invoked using a string object and takes no argument. If the invoking string contains alphanumeric characters only it returns true otherwise false. str1 = "So234MA" print(str1.isalnum()) str1 = "So 234MA" print(str1.isalnum()) str1 = "HiSoma" print(str1.isalnum()) str1 = "3156" print(str1.isalnum()) Output True False True True |
String isalpha() | Checks if All Characters are Alphabets Return type of this method is boolean (true or false). The method is invoked using a string object and takes no argument. If the invoking string contains alphanumeric characters only it returns true otherwise false. str1 = "So234MA" print(str1.isalpha()) str1 = "Soma Das" print(str1.isalpha()) str1 = "HiSoma" print(str1.isalpha()) str1 = "3156" print(str1.isalpha()) Output False False True False |
String isdecimal() | Checks Decimal Characters Return type of this method is boolean (true or false). The method is invoked using a string object and takes no argument. If the invoking string contains decimal only it returns true otherwise false. str1 = "So234MA" print(str1.isdecimal()) str1 = "Soma Das" print(str1.isdecimal()) str1 = "HiSoma" print(str1.isdecimal()) str1 = "3156" print(str1.isdecimal()) Output False False False True |
String isdigit() | Checks Digit Characters Return type of this method is boolean (true or false). The method is invoked using a string object and takes no argument. If the invoking string contains digits only it returns true otherwise false. str1 = "So234MA" print(str1.isdigit()) str1 = "Soma Das" print(str1.isdigit()) str1 = "HiSoma" print(str1.isdigit()) str1 = "3156" print(str1.isdigit()) Output False False False True |
String isidentifier() | Checks for Valid Identifier |
String islower() | Checks if all Alphabets in a String are Lowercase Return type of this method is boolean (true or false). The method is invoked using a string object and takes no argument. If all the alphabets in the invoking string are in lower case only it returns true otherwise false. The string may contain digits, whitespaces. str1 = "So234MA" print(str1.islower()) str1 = "Soma Das" print(str1.islower()) str1 = "hi soma" print(str1.islower()) Output False False True |
String isnumeric() | Checks Numeric Characters A numeric character may be Decimal, Digit or Numeric Return type of this method is boolean (true or false). The method is invoked using a string object and takes no argument. If all the alphabets in the invoking string are numeric characters, the method would return true otherwise false. |
String isprintable() | Checks Printable Character Return type of this method is boolean (true or false). The method is invoked using a string object and takes no argument. If all the characters in the invoking string are pritable characters, the method would return true otherwise false. Characters that occupies printing space on the screen are known as printable characters like letters and symbols, digits, punctuation and whitespace s = 'We can print space' print(s) print(s.isprintable()) s = '\nNew Line Character is printable' print(s) print(s.isprintable()) s = '' " print('\nEmpty string also printable', s.isprintable()) |
String isspace() | Checks Whitespace Characters Return type of this method is boolean (true or false). The method is invoked using a string object and takes no argument. If all the characters in the invoking string are space, the method would return true otherwise false. s1 = ' \t' print(s1.isspace()) s1 = ' abcd ' print(s1.isspace()) Output True False |
String istitle() | Checks for Titlecased String Return type of this method is boolean (true or false). The method is invoked using a string object and takes no argument. The method returns true if an uppercase character is followed by a lowercase character or uncased character and if an uppercase character proceeds a character that character must be an uncased character. The method returns false if no uppercase characters, if uppercase follows a lowercase character with no whitespace between the characters, if uppercase follows another uppercase with no whitespace. Whitespace is a non case character. str1 = "Master Code Online" str1.istitle() True str1 = "master code online" str1.istitle() False |
String isupper() | returns if all characters are uppercase characters Return type of this method is boolean (true or false). The method is invoked using a string object and takes no argument. The method returns true if all the characters in the invoking string are in uppercase. The method returns false if all the characters in the invoking string are in lowercase. str1 = "Master Code Online" str1.isupper() False str1 = "SOMA DAS" str1.isupper() True |
String join() | Returns a Concatenated String |
String ljust() | returns left-justified string of given width |
String rjust() | returns right-justified string of given width |
String lower() | returns lowercased string |
String upper() | returns uppercased string |
String swapcase() |
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