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
|
#!/usr/bin/python3
# This is a Python program to display large factorials and test "fact.py".
from fact import factorial
import sys
import os
import string
def usage():
print("This program calculates large factorials.")
print("Requires and tests \"fact.py\".")
print()
print("Usage: %s integer_expressions" % os.path.basename(sys.argv[0]))
print()
print("The integer expressions should be separated by spaces.")
print("A factorial is the product of all positive integers <= a given integer.")
sys.exit(2)
args = sys.argv[1:]
if (args == []):
usage()
else:
try:
num = eval(string.join(args))
print("factorial(", num, ") =", factorial(num))
except:
for arg in args:
num = eval(arg)
print("factorial(", num, ") =", factorial(num))
|
