Operations related to python strings and python strings

Operations related to python strings and python strings

 

Python string-related operations

 

1. string SEARCH
Name = "today is a \ t beautiful day"
Print (name. capitalize () # uppercase letters
Print (name. center (40, '-') # center display, fill in '-' when there is not enough '-'
Print (name. count ('A', 4) # count the number of times a character appears
Print (name. endswith ('A') # judge whether it ends with a given character. True is returned; otherwise, False is returned.
Print (name. startswith ('T') # returns True if it starts with a given character. Otherwise, False is returned.
Print (name. expandtabs (30) # Set the tab Length
Print (name. find ('is') # search for the index of the first occurrence of a string
Print (name. rfind ('A') # index of the last occurrence of a given character
Print (name. index ('A') # index of the first occurrence of a given character
Print (name. rindex ('A') # index of the last occurrence of a given character
Print (name. swapcase () # small to large case conversion, large to small
Print (name. replace ('s ','s') # string replacement
Print (name. title () # uppercase letters
Print (name. lower () # All lowercase letters
Print (name. upper () # all uppercase letters

2. String judgment
Name3 = '123afdasd'
Print (name3.isdigit () # determine if it is an integer
Print (name3.isalnum () # whether it is a letter or number, Arabic
Print (name3.isalpha () # Is it a letter?
Print (name3.isdecimal () # Is it a decimal number?
Print (name3.isidentifier () # identifies a valid identifier.
Print (name3.isnumeric () # Is it a number?
Print (name3.islower () # whether it is all lowercase
Print (name3.isupper () # whether it is fully capitalized
Print (name3.istitle () # whether the first letter is capitalized
Print (name3.isprintable () # whether it can print characters
Print (name3.isspace () # whether it is a space

3. String Filling
Print (name. ljust (30, '-') # Fill in '-' on the left to reach the specified number of characters
Print (name. Fill ust (30, '-') # Fill '-' to the left of the string to the specified number of characters.
Print (name. zfill (30) # Fill '0' on the right side of the string to reach the specified number of characters.

4. String space Processing
# Remove the given characters (beginning or end). The default values are \ t, \ r, \ n, and ''.
Name = 'asdffgas'
Print (name. lstrip ('as') # Remove the left space
Print (name. rstrip ('as') # Remove the right space
Print (name. strip ('as') # Remove spaces on both sides

5. string segmentation

Print (name. partition ('D') # split the string into three parts after the separator.
Print (name. rpartition ('D') # split the string into three parts after the separator.

Print (name. rsplit ('D') # split the string into the first and last two parts based on the delimiter, excluding the delimiter
Print (name. split ('D') # split the string into the first and last two parts based on the delimiter, excluding the delimiter