Useful String Methods in Python

• capitalize()
• casefold()
• count()
• endswith()
• find()
• isalpha()
• isdigit()
• isidentifier()
• islower()
• isupper()
• replace()
• upper()

capitalize() method converts the first character to upper case.

str = "hello world"
print(str.capitalize())

The output for above code will be:

Hello World

casefold() method converts the string into lower case.

str = "INFOVISTARDOTCOM"
print(str.casefold())

The output of the above code will be:

infovistardotcom

count() method returns the number of times a specified character occures.

str = "InfovistarDotCom"
print(str.count("o"))

The output of the above code will be:

3

endswith() method returns True if the string ends with specified character or values.

str = "InfovistarDotCom"
print(str.endswith("Com"))

The output of the above code will be:

True

find() method searches for a specified value and returns the position of where it was found.

str = "InfovistarDotCom"
print(str.find("Com"))

The output of the above code will be:

12

isalpha() method returns True if all characters in the string are in the alphabet.

str = "InfovistarDotCom"
print(str.isalpha())

The output of the above code will be:

True

isdigit() method returns True if all characters in the string are in the digits.

str = "InfovistarDotCom"
print(str.isdigit())

The output of the above code will be:

False

isidentifier() method returns True if the string is an identifier.

str = "InfovistarDotCom"
print(str.isidentifier())

The output of the above code will be:

True

islower() method returns True if characters in the string are lower case.

str = "InfovistarDotCom"
print(str.islower())

The output of the above code will be:

False

isupper() method returns True if characters in the string are upper case.

str = "InfovistarDotCom"
print(str.isupper())

The output of the above code will be:

False

replace() method returns a string where a specified value is replaced.

str = "Infovistar?Com"
print(str.replace("?", "Dot"))

The output of the above code will be:

InfovistarDotCom

upper() method converts a string into upper case.

str = "Infovistar?Com"
print(str.upper())

The output of the above code will be:

INFOVISTARDOTCOM