Python String Method

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isalnum()

returns True if all characters in the string are alphanumeric

isdigit()

returns True if all characters in the string are digits

isalpha()

returns True if all characters in the string are in the alphabet

islower()

returns True if all characters in the string are lower case

isnumeric()

returns True if all characters in the string are numeric

isprintable()

returns True if all characters in the string are printable

isupper()

returns True if all characters in the string are upper case

isspace()

returns True if all characters in the string are whitespaces

istitle()

returns True if the string follows the rules of a title

isidentifier()

returns True if the string is an identifier

center()

returns a centered string

ljust()

returns a left justified version of the string

lstrip()

returns a left trim version of the string

rstrip()

returns a right trim version of the string

replace()

returns a string where a specified value is replaced with a specified value

translate()

returns a translated string

maketrans()

returns a translation table to be used in translations

partition(), rpartition()

returns a tuple where the string is parted into three parts

encode()

returns an encoded version of the string

count()

returns the number of times a specified value occurs in a string

endswith()

returns true if the string ends with the specified value

startswith()

returns true if the string starts with the specified value

rfind(), rindex(), find()

searches the string for a specified value and returns the last position of where it was found

index()

searches the string for a specified value and returns the position of where it was found

expandtabs()

sets the tab size of the string

splitlines()

splits the string at line breaks and returns a list

split(), rsplit()

splits the string at the specified separator, and returns a list

swapcase()

swaps cases, lower case becomes upper case and vice versa

isdecimal()

Returns True if all characters in the string are decimals

upper()

converts a string into upper case

capitalize()

converts first character to uppercase

title()

converts the first character of each word to upper case

casefold(), lower()

coverts string to lowercase

zfill()

fills the string with a specified number of 0 values at the beginning

format(), format_map()

formats specified values in a string

join()

joins the elements of an iterable to the end of the string


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