Madlibs Project - Beginner Python

Python
1

I am currently working on a madlibs project which runs from command line. The code runs ok, but I would like it to raise an error when an integer is inputted instead of a string. I’ve tried looking at different tutorials online, but none of them seem to be helping me in this instance.

The below is the code which currently runs:

noun = str(input("Noun: "))
verb = str(input("Verb: "))
adjective = str(input("Adjective: "))
verb2 = str(input("Verb: "))

class madlibs():
    def first_method():
        madlib = f"Learning to {verb} is very {adjective}. {noun} can be difficult, so you need to {verb2} hard."
        print(madlib)

    def second_method():
        madlib2 = (" Learning to " +   verb)
        print(madlib2)
        
    def third_method():
        madlib3 =  "Learning to {} is very {}. {} can be difficult, so you need to {} hard.".format(verb,adjective,noun,verb2)
        print(madlib3)

call_class = madlibs()
madlibs.first_method()
madlibs.second_method()
madlibs.third_method()

I would appreciate any suggestions :slightly_smiling_face:

2

Hey There,

Modified Code:

# While True for making sure madlib class's user defined functions are called if all the values are string

while True:
    
    noun = str(input("Noun: "))    
    verb = str(input("Verb: "))
    adjective = str(input("Adjective: "))
    verb2 = str(input("Verb: "))

    # A new list created with all the input values
    str_list={noun,verb,adjective,verb2} 

    # Test code to check the values entered
    print(str_list)

    # "isdigit()" checks if the value is a digit or a string and "all()" checks whether the given condition is satisfied by all elements or not
    y=all(i.isdigit()==False for i in str_list)

    # if-else loop, if all values are satisfied we will call the user defined functions present in class "madlibs()"

    if y ==True:    
        call_class = madlibs()
        madlibs.first_method()
        madlibs.second_method()
        madlibs.third_method()
        break
    # In case even a single input is a digit, we will request user to input correct values.   
    print("Enter the correct values!!")
    
        

class madlibs():
    def first_method():
        madlib = f"Learning to {verb} is very {adjective}. {noun} can be difficult, so you need to {verb2} hard."
        print(madlib)

    def second_method():
        madlib2 = (" Learning to " +   verb)
        print(madlib2)
        
    def third_method():
        madlib3 =  "Learning to {} is very {}. {} can be difficult, so you need to {} hard.".format(verb,adjective,noun,verb2)
        print(madlib3)

In order to make sure that only string value is passed to the UDF, following steps were taken:

  • All 4 input values taken from the user are added to a list

  • Once the values are added to a list we can check if they are integers or not with the help of “isdigit()” and " all() " method.

y=all(i.isdigit()==False for i in str_list)

  • In the above code all the values of the list are checked for digits, if there is no digit present in all the 4 elements, it will return True which is passed to a variable named “y”

  • If loop then checks for the value of “y” variable and calls UDF when True.

  • In case of digits, condition will not satisfy and while loop will ask user to input correct values once again.

  • The loop continues unless all 4 values are strings.

  • At last, the print function of UDF will display result on the screen.

I’ve added comments within the code wherever additional lines were written.