Capitalize----------------------------the first word letters to uppercase
Casefold------------------------------all letters into lowercase
Center--------------------------------Set Font Center display
Count---------------------------------number of occurrences of a character in a statistical string
Encode--------------------------------encoding for Unicode
EndsWith------------------------------whether to end with XXX
Expandtabs----------------------------
Find----------------------------------
Format--------------------------------
Format_map----------------------------
Index---------------------------------
Isalnum-------------------------------
ISALPHAASD----------------------------
Isdecimal-----------------------------
IsDigit-------------------------------
Isidentifier--------------------------
Islower-------------------------------
IsNumeric-----------------------------
Isprintable---------------------------
Isspace-------------------------------
Istitle-------------------------------
Isupper-------------------------------
Join----------------------------------
Ljust---------------------------------
Lower---------------------------------
Lstrip--------------------------------
Maketrans-----------------------------
Partition-----------------------------
Replace-------------------------------
RFind---------------------------------
Rindex--------------------------------
Rjust---------------------------------
Rpartition----------------------------
Rsplit--------------------------------
Rstrip--------------------------------
Split---------------------------------
Splitlines----------------------------
StartsWith----------------------------
Strip---------------------------------
Swapcase------------------------------
Title---------------------------------
Translate-----------------------------
Upper---------------------------------
Zfill---------------------------------
Python's str string internal function directory