Get PIP Requirements for current folder. Hacky.

pip_require_this.py

import importlib
import subprocess
import re
import os
import joblib
from joblib import parallel_backend, Parallel, delayed


found_imports = sorted(list(set([x.lstrip().rstrip() for x in subprocess.check_output("findimports -p -l 1  |grep -v ':' |sort -u", shell=True).decode("utf-8").rstrip().lstrip().split("\n")])))
installed_packages = subprocess.check_output('pip list | tail -n +3 | cut -d" " -f1', shell=True).decode("utf-8").rstrip().lstrip()


def get_package_files(package):
    output = subprocess.check_output('pip show -f {package}'.format(package=package), shell=True).decode("utf-8").strip()
    pip_search = re.match(r'Name:\s*(?P<name>[^ \n]+).+Location:\s+(?P<location>[^ \n]+).+Files:\s+(?P<files>.+)', output, re.MULTILINE|re.DOTALL)
    pip_dict = pip_search.groupdict()
    name = pip_dict["name"]
    location = pip_dict["location"].lstrip().rstrip()
    files = pip_dict["files"]
    if files.startswith("Cannot locate"):
        files = subprocess.check_output("find {location} -name '*.py' ".format(location=pip_search.groupdict()["location"]), shell=True).decode("utf-8").lstrip().rstrip()
    files = [os.path.join(location, f.rstrip().lstrip()) for f in files.strip().split("\n")]
    file2package = {f: name for f in files}
    package2files = {name: files}
    return file2package, package2files

file2package = {}
package2files = {}
installed_package_files = [delayed(get_package_files)(package) for package in installed_packages.strip().split("\n")]

for f2p, p2f in Parallel(n_jobs=-1, backend="multiprocessing")(installed_package_files):
    file2package.update(f2p)
    package2files.update(p2f)

#####################################################################################
import_files = [];
for imp in found_imports:
    try:
        import_files.append(importlib.import_module(imp).__file__)
    except Exception as e:
        print("error in %s, %s" % (imp, e))
############################################################
not_found_packages = set([f for f in import_files if f not in file2package])
used_packages = set([file2package.get(f, None) for f in import_files])

package_filter = re.compile("(=|^)(%s)(==|$)" % ("|".join([re.escape(x) for x in used_packages if x]),))
frozen = subprocess.check_output("pip freeze", shell=True).decode("utf-8").rstrip().lstrip().split("\n")

filtered_frozen = [f for f in frozen if package_filter.search(f)]
filtered_frozen.sort()
print("\n".join(filtered_frozen))