import sys

import re

import codecs

def requirements_parser(file_path):

string = get_string_from_file(file_path)

get_packages_and_versions(string)

def get_string_from_file(file_path):

input = codecs.open(file_path, mode="r", encoding="utf-8")

string = input.read()

return string

def get_operator(requirement):

equal = re.compile(".*==.*")

equal_major = re.compile(".*>=.*")

equal_minor = re.compile(".*<=.*")

major = re.compile(".*>.*")

minor = re.compile(".*<.*")

op = ""

if equal.match(requirement):

op = "=="

elif equal_major.match(requirement):

op = ">="

elif equal_minor.match(requirement):

op = "<="

elif major.match(requirement):

op = ">"

elif minor.match(requirement):

op = "<"

return op

def get_packages_and_versions(string):

regex = re.compile("^[^#].*[==,>,>=]\S*",re.MULTILINE)

requirements_list = regex.findall(string)

for requirement in requirements_list:

op = get_operator(requirement)

package, version = requirement.split(op)

print "{package} {version}".format(package=package, version=version)