String Validators Python has built-in string validation methods for basic data. It can check if a string is composed of alphabetical characters, alphanumeric characters, digits, etc. str.isalnum() This method checks if all the characters of a string are alphanumeric (a-z, A-Z and 0-9). >>> print 'ab123'.isalnum() True >>> print 'ab123#'.isalnum() False str.isalpha() This method checks if all the..
Find a string In this challenge, the user enters a string and a substring. You have to print the number of times that the substring occurs in the given string. String traversal will take place from left to right, not from right to left. NOTE: String letters are case-sensitive. Input Format The first line of input contains the original string. The next line contains the substring. Constraints Eac..
Mutations We have seen that lists are mutable (they can be changed), and tuples are immutable (they cannot be changed). Let's try to understand this with an example. You are given an immutable string, and you want to make changes to it. Example >>> string = "abracadabra" You can access an index by: >>> print string[5] a What if you would like to assign a value? >>> string[5] = 'k' Traceback (mos..
What's Your Name? You are given the firstname and lastname of a person on two different lines. Your task is to read them and print the following: Hello firstname lastname! You just delved into python. Function Description Complete the print_full_name function in the editor below. print_full_name has the following parameters: string first: the first name string last: the last name Prints string: ..
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