Page 107 - KEC Khaitan C8.5 Flipbook
P. 107

STRING BUILT-IN FUNCTIONS
                 Python includes the following built-in functions to manipulate strings:

                    len(): The len() function calculates and returns the length of a string supplied as an argument.
                   Syntax of using len() function is:

                   len(string_name)
                    lower(): The lower() function converts all uppercase letters to lowercase. Syntax of using lower()
                   function is:

                   string_name.lower()

                    upper(): The upper() function  converts all  lowercase  letters  to  uppercase.  Syntax  of using
                   upper() function is:
                   string_name.upper()
                    capitalize(): The capitalize() function returns a string with the first character in capital. Syntax
                   of using capitalize() function is:

                   string_name.capitalize()

                 Program 11: To use various string built-in functions

                     Program11.py
                  File  Edit  Format    Run   Options   Window    Help
                                                                                       Output
                   str = 'Hello'
                   print(len(str))                                                   5
                   print('Hello'.lower())                                            hello
                   print('hello'.upper())                                            HELLO
                   print('hello'.capitalize())
                                                                                     Hello





                           SOME MORE PROGRAMS

                 Program 12: To test whether a given number is even or odd

                     Program12.py

                  File  Edit  Format   Run    Options   Window    Help

                  #Program to check whether the number is even or odd
                  number = int(input("Enter an integer: "))
                  if number % 2 == 0:
                      print("The number is even.")                                         Output
                  else:
                                                                                        Enter an integer: 24
                      print("The number is odd.")
                                                                                        The number is even.








                                                                                        Control Structures in Python  105
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