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Update Lesson 2 Task 4 to raise an error properly

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Stanislav Mykhailenko 2023-01-24 02:37:00 +02:00
parent 838f6cd131
commit 9fd54d6fbc
Signed by: stanislavmykhailenko
GPG key ID: 1E95E66A9C9D6A36
1 changed files with 7 additions and 10 deletions
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Lesson_2/task4.py
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@ -2,19 +2,16 @@
# Author: Stanislav Mykhailenko # Author: Stanislav Mykhailenko
# License: Unlicense # License: Unlicense
error = False try:
number = int(input("Enter a natural number: "))
if number < 1:
raise ValueError("A natural number is required.")
try: number = int(input("Enter a natural number: "))
except ValueError: error = True
if not error and number < 1: error = True
if not error:
factorial = 1 factorial = 1
for i in range(2, number + 1): for i in range(2, number + 1):
factorial = factorial * i factorial = factorial * i
else:
print(str(number) + " factorial is " + str(factorial)) print(str(number) + " factorial is " + str(factorial))
else: except ValueError:
print("Invalid number entered.") print("Invalid number entered.")