Collecting Input in Python.
Let's add some input mechanism so our user enters the set of
numbers whose H.C.F. we are to find.
The Python H.C.F. (G.C.D.) code
All we need is a main code that asks the user for input.
For this purpose, we'll use the input() function.
How to use the code
The user gets to enter his/her choice of numbers.
After entering each number, the user presses <Enter>.
After the user has entered every of his/her numbers, the
user enters the word done
to see the result.
Note: You can comment out the Python code for the main class from the previous lesson if you have been following.
Main class Python code.
#!/usr/bin/python
from FastHCF import quickHCF
import re
# Collect input
print("\nWelcome to our Find HCF program.\
Enter your series of numbers whose HCF you wish to find.\
\nType 'done' when you are through with entering your numbers.")
group = []
collect_input_text = "Enter First Number: ";
user_num = "start"
try:
while user_num != "DONE":
# get keyboard input
user_num = input(collect_input_text)
# Make sure input is a number
if re.search("[0-9]+", user_num):
user_num = int(user_num)
if user_num != 0:
group.append(user_num)
collect_input_text = "Enter Next Number: "
else:
print("\nYou cannot enter zero. Repeat that!\nType 'done' when you're finished.\n")
else:
# Convert 'user_num' to upper case.
user_num = user_num.upper()
if user_num != "DONE":
print("\nWrong Input. Repeat that!\nType 'done' when you're finished.\n")
except:
print("Sorry, but something must have gone wrong!")
# Use the fast HCF module/class
h_c_f = quickHCF(group)
answer = h_c_f.getHCF()
print ("The H.C.F. of ", group, "is", answer)
print("\n\n")
from FastHCF import quickHCF
import re
# Collect input
print("\nWelcome to our Find HCF program.\
Enter your series of numbers whose HCF you wish to find.\
\nType 'done' when you are through with entering your numbers.")
group = []
collect_input_text = "Enter First Number: ";
user_num = "start"
try:
while user_num != "DONE":
# get keyboard input
user_num = input(collect_input_text)
# Make sure input is a number
if re.search("[0-9]+", user_num):
user_num = int(user_num)
if user_num != 0:
group.append(user_num)
collect_input_text = "Enter Next Number: "
else:
print("\nYou cannot enter zero. Repeat that!\nType 'done' when you're finished.\n")
else:
# Convert 'user_num' to upper case.
user_num = user_num.upper()
if user_num != "DONE":
print("\nWrong Input. Repeat that!\nType 'done' when you're finished.\n")
except:
print("Sorry, but something must have gone wrong!")
# Use the fast HCF module/class
h_c_f = quickHCF(group)
answer = h_c_f.getHCF()
print ("The H.C.F. of ", group, "is", answer)
print("\n\n")