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String Built-in Functions/Methods

There are a lot of strings functions/methods in Python. Find full list in course manual. Here’s are some that you find useful in this course:

Functions

len(varName) – Returns the length of a list, string
join(varName) – Converts the elements of an iterable into a string.

Methods

varName.capitalize() – Converts the first character to upper case.
varName.center(length) – Returns a centered string
varName.count(“?”) – Returns the number of times a specified value (?) occurs in a string (varName).
varName.endswith(“?”) – Returns true if the string ends with the specified value.
varName.find(“?”) – Searches the string for a specified value and returns the position of where it was found.
varName.format(placeholder = value) – Formats specified values in a string.
varName.index(“?”) – Searches the string for a specified value and returns the position of where it was found.
varName.isalnum() – Returns True if all characters in the string are alphanumeric.
varName.isalpha() – Returns True if all characters in the string are in the alphabet.
varName.isascii() – Returns True if all characters in the string are ascii characters.
varName.isdecimal() – Returns True if all characters in the string are decimals.
varName.isdigit() – Returns True if all characters in the string are digits.
varName.isidentifier() – Returns True if the string is an identifier.
varName.islower() – Returns True if all characters in the string are lower case.
varName.isupper() – Returns True if all characters in the string are upper case.
varName.isnumeric() – Returns True if all characters in the string are numeric.
varName.isprintable() – Returns True if all characters in the string are printable.
varName.isspace() – Returns True if all characters in the string are whitespaces.
varName.istitle() – Returns True if the string follows the rules of a title.
varName.ljust(value) – Returns a left justified version of the string.
varName.rjust() Returns a right justified version of the string.
varName.lower() – Converts a string into lower case.
varName.upper() – Converts a string into upper case.
varName.strip() – Returns a trimmed version of the string.
varName.lstrip() – Returns a left trim version of the string.
varName.rstrip() Returns a right trim version of the string.
varName.partition() – Returns a tuple where the string is parted into three parts.
varName.replace(“old”, “new”) – Returns a string where a specified value is replaced with a specified value.
varName.rfind() – Searches the string for a specified value and returns the last position of where it was found.
varName.rindex() – Searches the string for a specified value and returns the last position of where it was found.
varName.rpartition() – Returns a tuple where the string is parted into three parts.
varName.rsplit() – Splits the string at the specified separator, and returns a list.
varName.split() – Splits the string at the specified separator, and returns a list.
varName.splitlines() – Splits the string at line breaks and returns a list.
varName.startswith() – Returns true if the string starts with the specified value.
varName.swapcase() – Swaps cases, lower case becomes upper case and vice versa.