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+--- Thread: Problems with isdigit function (/thread-11263.html)
Problems with isdigit function - Omegax77 - Jun-30-2018
Made a guessing game but I think I coded something wrong when checking whether if the input is a number or not. My goal is that the user is only allowed to print 4 numbers(no letters). I think I did a mistake with the isdigit() area. Help plz! Thank you
Error: "invalid literal for int() with base 10: 'f999' "
BTW this is my first post. Not sure if my formatting is correct
import random
n = random.randint(0, 9999)
guess = int(input("Enter number from 0 to 9999"))
print()
while n != "guess":
if len(str(guess)) < 4:
print ("Invalid! Not enough characters. 4 characters only")
guess = int(input("Enter number from 0-9999 "))
print()
elif not guess.isdigit():
print("Only numbers!")
guess = int(input("Enter number from 0-9999 "))
print()
elif len(str(guess)) > 4:
print ("Invalid! Too many characters. 4 characters only!")
guess = int(input("Enter number from 0-9999 "))
print()
elif guess < n:
print ("too low")
guess = int(input("Enter number from 0-9999 "))
print()
elif guess > 9999:
print("Invalid")
guess = int(input("Enter number from 0-9999 "))
print()
elif guess < 0:
print("Invalid")
guess = int(input("Enter number from 0-9999 "))
print()
elif guess > n:
print ("too high")
guess = int(input("Enter number from 0-9999 "))
print()
else:
print ("You guessed it!")
break
print
RE: Problems with isdigit function - ichabod801 - Jun-30-2018
Your formatting is not correct. Please use Python tags. See the BBCode link in my signature below for details/instructions.
I think you want to remove the quotes in the while loop condition. Your guess variable is never a string because you are always applying int to it when you get it from input.
RE: Problems with isdigit function - woooee - Jun-30-2018
You are trying to put too many elifs in one routine. Also, you convert to an int on input and then convert back to a string to test?? First, use a function to get the input. Then, use the verified input from the function to test against the number to guess. Note that if the user is to enter 4 digits, then the range for random.randint and everything else is 1000-9999 = 4 digits.
import random
n = random.randint(1000, 9999)
def get_input():
while True:
guess = input("Enter a number from 1000 through 9999 ")
if guess.isdigit():
guess_int=int(guess)
if 999 < guess_int < 10000: ## covers every number with a length of 4
return guess_int
else:
print("You must enter 4 digits")
else:
print("Enter only numbers in the range 1000-->9999")
guess= -1
while n != guess:
guess=get_input()
if guess == n:
print ("\nYou guessed it! \n")
##break
elif guess < n:
print ("Your guess is too low \n")
elif guess > n:
print ("Your guess is too high \n")