Question

My module page is correct but I don't believe I am using the main() function properly. One of my .py files is supposed to contain my definitions, which is the module file. My second .py file is supposed to properly call a main function that does what my program asks it to: First name, last name, age, and respond based off of input. For some reason I am struggling with using the main() function so that my program works. Any help? Programming language is Python 3. (3.8.1 specifically).

THIS IS MY PROGRAM

import asgn4_module as mod

filename = ("Assignment 4")

print(filename)

def main():

firstname = input("Please enter your first name:")

while mod.is_field_blank(firstname):

print("First Name must be entered.")

firstname = input("Please enter your first name:")

lastname = input("Please enter your last name:")

while mod.is_field_blank(lastname):

print("Last name must be entered.")

lastname = input("Please enter your last name:")

age = input("Please enter your age:")

while mod.is_field_blank(age):
  
print("Age must be entered.")
  
age = input("Please enter your age:")

while not mod.is_field_a_number(age):

print("Age must be a number.")

age = input("Please enter your age:")

if int(age) >= 40:

print("Well, " + firstname + " " + lastname + ", it looks like you're over the hill!")

else:

print("It looks like you have many programming years ahead of you, " + firstname + " " + lastname + ".")

if __name__ == "__main__":
main()

print("End of assignment 4")

THIS IS MY MODULE

"""
This module checks to see if the string is blank or a number.
"""

def is_field_blank(s):
if(len(s)==0):
return True
else:
return False

def is_field_a_number(s):
try:
if(int(s)):
return True
except:
return False

Answer 1

#you were using it correctly only. I have made some changes while checking for input for age

import asgn4_module as mod

filename = ("Assignment 4")
print(filename)
def main():
firstname = input("Please enter your first name:")
while mod.is_field_blank(firstname):
print("First Name must be entered.")
firstname = input("Please enter your first name:")
lastname = input("Please enter your last name:")
while mod.is_field_blank(lastname):
print("Last name must be entered.")
lastname = input("Please enter your last name:")
  
age = input("Please enter your age:")
while mod.is_field_blank(age) or not mod.is_field_a_number(age):
if mod.is_field_blank(age):
print("Age must be entered.")
else:
print("Age must be a number.")
age = input("Please enter your age:")
if int(age) >= 40:
print("Well, " + firstname + " " + lastname + ", it looks like you're over the hill!")
else:
print("It looks like you have many programming years ahead of you, " + firstname + " " + lastname + ".")

if __name__ == "__main__":
main()
print("End of assignment 4")