How to print two statements from different functions on the same line in Python

Yes, it does. You just need to tell print not to add a new-line after the first one. In python2, you do this by adding a trailing comma: print mystring,. In python3, print is a function that has the end keyword argument: print(mystring, end="")

The easy way is to rewrite your number-to-words function and have it return a string instead of printing it.

The more involved way is to redirect stdout to capture the print output as a string.

Edit: looks like I made it more complicated than necessary; you could instead try

output_words = []
if (main == hundreds[index]):
    output_words.append(hundreds_words[index])
for location in range (0, 10):
    if (difference == twenties[location]):
        output_words.append(twenties_words[location])
return " ".join(output_words)

In python 2 you can end a print statement with a , to indicate not to terminate in a newline, e.g.:

print hundreds_words[index], 

In python 3 (or py2 with from __future__ import print_function) you explicitly need to define the end, e.g.:

print(hundreds_words[index], end=' ')

But ideally you would just collect all the result up in a list and join() them at the end...

result = []
if (main == hundreds[index]):
    result.append(hundreds_words[index])
for location in range (0, 10):
    if (difference == twenties[location]):
        result.append(twenties_words[location])

print(' '.join(result))

Always design functions to return values, and not to print them (it's much more Pythonic!). Therefore, you should modify your code this way:

# FOR PYTHON 2.x

if (main == hundreds[index]):
    print hundreds_words[index], # Note the comma
for location in range (0, 10):
    if (difference == twenties[location]):
        print twenties_words[location]

# FOR PYTHON 3.x

if (main == hundreds[index]):
    print(hundreds_words[index], end=" ") # end=" " will override the default '\n' and leave a space after the string
for location in range (0, 10):
    if (difference == twenties[location]):
        print(twenties_words[location])

There's also a third option, more scalable: to wrap all datas in a list, and then print everything.

printable = []

if (main == hundreds[index]):
    printable += hundreds_words[index]
for location in range (0, 10):
    if (difference == twenties[location]):
        printable += twenties_words[location]

print(" ".join(printable))