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Introduction to Python

  • Profound Academy

    • Status
      • 1
        Input and Output
      • 2
        Variables and Integer Arithmetic
      • 3
        Conditional Operators
      • 4
        Advanced Conditions - Nesting
      • 5
        Types and Variables
      • 6
        Strings
      • 7
        Lists
      • 8
        For Loops
      • 9
        While Loops
      • 10
        continue, break, while...else
      • 11
        String and List methods
      • 12
        Nested Loops
      • 13
        List Comprehension
      • 14
        Tuples and Sets
      • 15
        dict
      • 16
        Functions
      • 17
        Functions 2
      • 18
        Lambda and higher-order functions
      • 19
        Files

  • str + int

    If you try to add an integer to a textual value, python will complain telling TypeError: can only concatenate str (not "int") to str.
    It’s only possible to add two strings to each other. So the way to add an integer to a string is to make it into a text first:
    a = 'some random string'
    b = 10
    c = a + str(b)
    print(c)       # some random string10
    When writing int(input()) we actually read a text and then convert it into an integer. It’s also possible to do the opposite by converting an integer into a string with str().

    Challenge

    Given a string and a number, your task is to print that string followed by a : and the 20 times multiple of the number.
    Note: Don’t use print directly. Store the result in a res variable and print res in the end.
    Input
    Output
    Here is a small number 7
    Here is a small number: 140
     
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