Test, czy znak to liczba ciągów Python
>>> 'A'.isdigit()
False
>>> '1'.isdigit()
True
Disturbed Dragonfly
>>> 'A'.isdigit()
False
>>> '1'.isdigit()
Truefor number in numbers:
if '4' in str(number):
print('{} True'.format(number))
else:
print("False")
s = set(str(4059304593))
print('2' in s)