no module named psycopg2

[amchii]

Thanks for your nice package.

Steps to reproduce

1. pip install django-fakery

2. 
   In [1]: from django_fakery import factory

In [2]: factory.m

ModuleNotFoundError: No module named 'psycopg2'

`pip install psycopg2` -> OK
but I didn't actually use pg, `psycopg2` is not required package

[jamescooke]

Can confirm - I've just reproduced this with Django==3.0.7, django-fakery==2.3.0. Here's my stack trace in case it's helpful:

>>> factory.m
Traceback (most recent call last):
  File "<console>", line 1, in <module>
  File "/tmp/tmp.dKR9G1hIik/venv/lib/python3.8/site-packages/django/utils/functional.py", line 224, in inner
    self._setup()
  File "/tmp/tmp.dKR9G1hIik/venv/lib/python3.8/site-packages/django/utils/functional.py", line 360, in _setup
    self._wrapped = self._setupfunc()
  File "/tmp/tmp.dKR9G1hIik/venv/lib/python3.8/site-packages/django_fakery/__init__.py", line 10, in <lambda>
    factory = SimpleLazyObject(lambda: import_string("django_fakery.faker_factory.factory"))
  File "/tmp/tmp.dKR9G1hIik/venv/lib/python3.8/site-packages/django/utils/module_loading.py", line 17, in import_string
    module = import_module(module_path)
  File "/tmp/tmp.dKR9G1hIik/venv/lib/python3.8/importlib/__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1014, in _gcd_import
  File "<frozen importlib._bootstrap>", line 991, in _find_and_load
  File "<frozen importlib._bootstrap>", line 975, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 671, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 783, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "/tmp/tmp.dKR9G1hIik/venv/lib/python3.8/site-packages/django_fakery/faker_factory.py", line 23, in <module>
    from .values import Evaluator
  File "/tmp/tmp.dKR9G1hIik/venv/lib/python3.8/site-packages/django_fakery/values.py", line 7, in <module>
    from .field_mappings import STRING_FIELDS
  File "/tmp/tmp.dKR9G1hIik/venv/lib/python3.8/site-packages/django_fakery/field_mappings.py", line 6, in <module>
    from django.contrib.postgres import fields as pg_fields
  File "/tmp/tmp.dKR9G1hIik/venv/lib/python3.8/site-packages/django/contrib/postgres/fields/__init__.py", line 1, in <module>
    from .array import *  # NOQA
  File "/tmp/tmp.dKR9G1hIik/venv/lib/python3.8/site-packages/django/contrib/postgres/fields/array.py", line 4, in <module>
    from django.contrib.postgres.forms import SimpleArrayField
  File "/tmp/tmp.dKR9G1hIik/venv/lib/python3.8/site-packages/django/contrib/postgres/forms/__init__.py", line 4, in <module>
    from .ranges import *  # NOQA
  File "/tmp/tmp.dKR9G1hIik/venv/lib/python3.8/site-packages/django/contrib/postgres/forms/ranges.py", line 3, in <module>
    from psycopg2.extras import DateRange, DateTimeTZRange, NumericRange
ModuleNotFoundError: No module named 'psycopg2'

My guess is that this import is causing the issue: https://github.com/fcurella/django-fakery/blob/master/django_fakery/field_mappings.py#L6

[fcurella]

Hi! Thank you for the report!

I've released v2.3.1, which should fix the problem. Let me know if you find any issues :)

[jamescooke]

New release looks good - thanks for quick fix :+1: