Add a command line tool to use num2words, credits to @hernamesbarbara

.coveragerc

@@ -0,0 +1,4 @@
+[report]
+omit =
+    */.tox/*
+    */tests/*

MANIFEST.in

@@ -1,3 +1,4 @@
 include CHANGES.rst
 include COPYING
 include tests/*
+include bin/num2words

README.rst

@@ -37,8 +37,20 @@ The test suite in this library is new, so it's rather thin, but it can be run wi
 
 Usage
 -----
+Command line::
 
-There's only one function to use::
+    $ num2words 10001
+    ten thousand and one
+    $ num2words 10123123 --lang es
+    diez millones ciento veintitrés mil ciento veintitrés
+    $ num2words 24,120.10
+    twenty-four thousand, one hundred and twenty point one
+    $ num2words 24,120.10 -l es
+    veinticuatro mil ciento veinte punto uno
+    $num2words 2.14 -l es --to currency
+    dos euros con catorce centimos
+
+In code there's only one function to use::
 
     >>> from num2words import num2words
     >>> num2words(42)

bin/num2words

@@ -0,0 +1,81 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+"""num2words: convert numbers into words.
+
+Usage:
+    num2words [options] <number>
+    num2words --list-languages
+    num2words --list-converters
+    num2words --help
+
+Arguments:
+    <number>                Number you want to convert into words
+
+Options:
+    -L --list-languages     Show all languages.
+    -C --list-converters    Show all converters.
+    -l --lang=<lang>        Output language [default: en].
+    -t --to=<to>            Output converter [default: cardinal].
+    -h --help               Show this message.
+    -v --version            Show version.
+    
+Examples:
+    $ num2words 10001
+    ten thousand and one
+    
+    $ num2words 10123123 --lang es
+    diez millones ciento veintitrés mil ciento veintitrés
+
+    $ num2words 24,120.10
+    twenty-four thousand, one hundred and twenty point one
+
+    $ num2words 24,120.10 -l es
+    veinticuatro mil ciento veinte punto uno
+
+    $num2words 2.14 -l es --to currency
+    dos euros con catorce centimos
+"""
+from __future__ import print_function, unicode_literals
+import os
+import sys
+from docopt import docopt
+import num2words
+
+__version__ = "0.5.7"
+__license__ = "LGPL"
+
+
+def get_languages():
+    return sorted(list(num2words.CONVERTER_CLASSES.keys()))
+
+
+def get_converters():
+    return sorted(list(num2words.CONVERTES_TYPES))
+
+
+def main():
+    version = "{}=={}".format(os.path.basename(__file__), __version__)
+    args = docopt(__doc__, argv=None, help=True, version=version, options_first=False)
+    if args["--list-languages"]:
+        for lang in get_languages():
+            sys.stdout.write(lang)
+            sys.stdout.write(os.linesep)
+        sys.exit(0)
+    if args["--list-converters"]:
+        for lang in get_converters():
+            sys.stdout.write(lang)
+            sys.stdout.write(os.linesep)
+        sys.exit(0)
+    try:
+        words = num2words.num2words(args['<number>'], lang=args['--lang'], to=args['--to'])
+        sys.stdout.write(words+os.linesep)
+        sys.exit(0)
+    except Exception as err:
+        sys.stderr.write(str(args['<number>']))
+        sys.stderr.write(str(err) + os.linesep)
+        sys.stderr.write(__doc__)
+        sys.exit(1)
+
+
+if __name__ == '__main__':
+    main()

requirements-test.txt

@@ -4,4 +4,4 @@ isort
 pep8<1.6
 coverage
 coveralls
-
+delegator.py

setup.py

@@ -1,5 +1,9 @@
+import re
+
 from setuptools import find_packages, setup
 
+PACKAGE_NAME = "num2words"
+
 CLASSIFIERS = [
     'Development Status :: 5 - Production/Stable',
     'Intended Audience :: Developers',
@@ -16,9 +20,27 @@ CLASSIFIERS = [
 LONG_DESC = open('README.rst', 'rt').read() + '\n\n' + \
             open('CHANGES.rst', 'rt').read()
 
+
+def find_version(fname):
+    """Parse file & return version number matching 0.0.1 regex
+    Returns str or raises RuntimeError
+    """
+    version = ''
+    with open(fname, 'r') as fp:
+        reg = re.compile(r'__version__ = [\'"]([^\'"]*)[\'"]')
+        for line in fp:
+            m = reg.match(line)
+            if m:
+                version = m.group(1)
+                break
+    if not version:
+        raise RuntimeError('Cannot find version information')
+    return version
+
+
 setup(
-    name='num2words',
+    name=PACKAGE_NAME,
-    version='0.5.7',
+    version=find_version("bin/num2words"),
     description='Modules to convert numbers to words. Easily extensible.',
     long_description=LONG_DESC,
     license='LGPL',
@@ -33,4 +55,6 @@ setup(
     packages=find_packages(exclude=['tests']),
     test_suite='tests',
     classifiers=CLASSIFIERS,
+    scripts=['bin/num2words'],
+    install_requires=["docopt>=0.6.2"]
 )

tests/test_cli.py

@@ -0,0 +1,96 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+from __future__ import unicode_literals
+
+import os
+import unittest
+
+import delegator
+import num2words
+
+
+class CliCaller(object):
+
+    def __init__(self):
+        self.cmd = os.path.realpath(os.path.join(os.path.dirname(__file__),
+                                    "..", "bin", "num2words"))
+        self.cmd_list = ["python", self.cmd]
+
+    def run_cmd(self, *args):
+        cmd_list = self.cmd_list + [str(arg) for arg in args]
+        cmd = " ".join(cmd_list)
+        return delegator.run(cmd)
+
+
+class CliTestCase(unittest.TestCase):
+    """Test the command line app"""
+
+    def setUp(self):
+        self.cli = CliCaller()
+
+    def test_cli_help(self):
+        """num2words without arguments should exit with status 1
+        and show docopt's default short usage message
+        """
+        output = self.cli.run_cmd()
+        self.assertEqual(output.return_code, 1)
+        self.assertTrue(output.err.startswith('Usage:'))
+
+    def test_cli_list_langs(self):
+        """You should be able to list all availabe languages
+        """
+        output = self.cli.run_cmd('--list-languages')
+        self.assertEqual(
+            sorted(list(num2words.CONVERTER_CLASSES.keys())),
+            output.out.strip().split(os.linesep)
+        )
+        output = self.cli.run_cmd('-L')
+        self.assertEqual(
+            sorted(list(num2words.CONVERTER_CLASSES.keys())),
+            output.out.strip().split(os.linesep)
+        )
+
+    def test_cli_list_converters(self):
+        """You should be able to list all available converters
+        """
+        output = self.cli.run_cmd('--list-converters')
+        self.assertEqual(
+            sorted(list(num2words.CONVERTES_TYPES)),
+            output.out.strip().split(os.linesep)
+        )
+        output = self.cli.run_cmd('-C')
+        self.assertEqual(
+            sorted(list(num2words.CONVERTES_TYPES)),
+            output.out.strip().split(os.linesep)
+        )
+
+    def test_cli_default_lang(self):
+        """Default to english
+        """
+        output = self.cli.run_cmd(150)
+        self.assertEqual(output.return_code, 0)
+        self.assertEqual(
+            output.out.strip(),
+            "one hundred and fifty point zero"
+        )
+
+    def test_cli_with_lang(self):
+        """You should be able to specify a language
+        """
+        output = self.cli.run_cmd(150, '--lang', 'es')
+        self.assertEqual(output.return_code, 0)
+        self.assertEqual(
+            output.out.strip(),
+            "ciento cincuenta punto cero"
+        )
+
+    def test_cli_with_lang_to(self):
+        """You should be able to specify a language
+        """
+        output = self.cli.run_cmd(150.55, '--lang', 'es', '--to', 'currency')
+        self.assertEqual(output.return_code, 0)
+        self.assertEqual(
+            output.out.strip(),
+            "ciento cincuenta euros con cincuenta y cinco centimos"
+        )

tox.ini

@@ -1,5 +1,5 @@
 [tox]
-envlist = flake8, isort, py27,py34,py35,py36
+envlist = flake8,isort,py27,py34,py35,py36
 
 [testenv]
 passenv = TRAVIS TRAVIS_*
@@ -10,6 +10,6 @@ commands =
     isort --check-only --recursive --diff num2words tests
     coverage erase
     coverage run -m unittest discover
-    coverage report --fail-under=75 --omit=.tox/*,/usr/*
+    coverage report --fail-under=75 --omit=.tox/*,tests/*,/usr/*
     coveralls