Python3 Global Variable Issue - python-3.x

Question

I am trying to learn about loops and conditions. Therefore I coded a generator, which randomly create lotto/lottery numbers. However I created a global variable 'valCount', which stores the generation count. But still got this error:
Bitte die Anzahl zu erzeugender Lottoscheine angeben: 2
Input is an integer number. Number = 2
Traceback (most recent call last):
File "/Volumes/HDD/Users/Stephan/PycharmProjects/LottZahlenGeneratorLoop/main.py", line 87, in
check_user_input(userCountInput)
File "/Volumes/HDD/Users/Stephan/PycharmProjects/LottZahlenGeneratorLoop/main.py", line 70, in check_user_input
outPutCount()
File "/Volumes/HDD/Users/Stephan/PycharmProjects/LottZahlenGeneratorLoop/main.py", line 55, in outPutCount
for x in range(valCount):
NameError: name 'valCount' is not defined
Correct behaviour:
User needs to input a number. This number get validated, if it is a digit or a letter. If this is a digit, the lotto/lottery numbers should be created by the count of users input. Otherwise, user is asked to enter number.
My code:
# IMPORTS
import random
from datetime import datetime
import os
# CLEAR CONSOLE
def clearConsole():
command = 'clear'
if os.name in ('nt', 'dos'): # If Machine is running on Windows, use cls
command = 'cls'
os.system(command)
# VARIABLES
date = datetime.now()
dateFormat = str(date.strftime("%d-%m-%Y %H:%M:%S"))
mainNumbers = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28,
29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50]
superNumbers = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12]
mainNumbersLotto = mainNumbers
del mainNumbersLotto[49] # löscht die 49. Stelle von mainnumbers, da Lotto 6aus49 nur Zahlen von 1-49 existieren
global valCount
# countToCreate = input("Bitte geben sie die Anzahl zum generieren an.")
# FUNCTION EUROJACKPOT GENERATOR
def eurojackpotFunc():
global eurojackpotOutput
RandomMainNumbers = str(sorted(random.sample(mainNumbers, 5)))
RandomSuperNumbers = str(sorted(random.sample(superNumbers, 2)))
eurojackpotOutput = "\nEurojackpot\n5 aus 50: " + RandomMainNumbers + "\nEurozahlen: " + RandomSuperNumbers
print(eurojackpotOutput)
# FUNCTION Lotto6aus49 GENERATOR
def lottoNumbersFunc():
global lottoNumbersOutput
RandomLottoNumber = str(sorted(random.sample(mainNumbersLotto, 6)))
lottoNumbersOutput = "\nLotto6aus49\n6 aus 49: " + RandomLottoNumber
print(lottoNumbersOutput)
# FUNCTION GENERATE TEXTFILE WITH RESULT
def generateTxtFile():
f = open("Lottozahle" + "- " + dateFormat + ".txt", "+w")
f.write(eurojackpotOutput + "\n " + lottoNumbersOutput)
def check_user_input(input):
try:
# Convert it into integer
valCount = int(input)
print("Input is an integer number. Number = ", valCount)
outPutCount()
except ValueError:
try:
# Convert it into float
valCount = float(input)
print("Input is a float number. Number = ", valCount)
userCountInputFunc()
except ValueError:
print("No.. input is not a number. It's a string")
userCountInputFunc()
def userCountInputFunc():
global userCountInput
userCountInput = input("Bitte die Anzahl zu erzeugender Lottoscheine angeben: ")
#
def outPutCount():
# LOOP FOR GENERATING COUNT
global valCount
xCount = 0
for x in range(valCount):
xCount = xCount + 1
print("\n#################")
print(xCount, ". Generation")
eurojackpotFunc()
lottoNumbersFunc()
generateTxtFile()
valCount = str(valCount)
print("\nEs wurden erfolgreich " + valCount + " Lottoscheine generiert.")
userCountInputFunc()
check_user_input(userCountInput)

Answer 1

The error message shows NameError: name 'valCount' is not defined (within your loop), and from the looks of it, you're attempting to define it twice– within outPutCount and in the true global scope. As an aside, no matter where you use the keyword global, it will always belong to the global scope.
Anyways, this is the problem with global variables (especially ones that have no value assigned to them before run-time)– figuring out their value while letting various areas in the code mutate them is a self-induced headache worth avoiding.
Try passing the value you want into the function by way of its arguments. You can implement this entire program without the usage of a global variable.
Hope that helps, and keep learning!