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    Program 7: To join two or more strings using string concatenation operator

                          Program7.py

                       File  Edit  Format   Run   Options   Window    Help
                       s1 = 'Here'

                       s2 = 'Is'
                       s3 = 'Python'
                       s = s1 + s2 + s3                                             Output
                       print(s)                                                   HereIsPython

                       String Replication Operator (*): The replication operator is used to repeat the string for a given
                       number of times.

                     Program 8: To repeat a string using string replication operator

                          Program8.py

                       File  Edit  Format   Run    Options   Window    Help

                       s1 = 'Hello'
                       s = s1 * 3
                                                                                    Output
                       print(s)
                                                                                 HelloHelloHello

                     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()

                                                                                          #Functions and Strings in Python 133

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