Great_expectations: Mising importlib-metadata dependency in verson 0.11.6

[javier-sanz]

Describe the bug
When installing version 0.11.6 (latest right now) I cannot use the library because I get an error ModuleNotFoundError: No module named 'importlib_metadata'

To Reproduce
Steps to reproduce the behavior:

1. Create an empty folder
2. Run python3.8 -m venv venv
3. Activate the env source venv/bin/activate
4. Install the library pip install great_expectations
5. Run the tutorial great_expectations init
6. The next exception is thrown

Traceback (most recent call last):
  File "/home/jsanz/Projects/urba/poc/great_expectations/test/venv/bin/great_expectations", line 7, in <module>
    from great_expectations.cli import main
  File "/home/jsanz/Projects/urba/poc/great_expectations/test/venv/lib/python3.8/site-packages/great_expectations/__init__.py", line 7, in <module>
    from great_expectations.data_context import DataContext
  File "/home/jsanz/Projects/urba/poc/great_expectations/test/venv/lib/python3.8/site-packages/great_expectations/data_context/__init__.py", line 3, in <module>
    from .data_context import BaseDataContext, DataContext, ExplorerDataContext
  File "/home/jsanz/Projects/urba/poc/great_expectations/test/venv/lib/python3.8/site-packages/great_expectations/data_context/data_context.py", line 28, in <module>
    from great_expectations.core.usage_statistics.usage_statistics import (
  File "/home/jsanz/Projects/urba/poc/great_expectations/test/venv/lib/python3.8/site-packages/great_expectations/core/usage_statistics/usage_statistics.py", line 17, in <module>
    from great_expectations.core.usage_statistics.anonymizers.anonymizer import Anonymizer
  File "/home/jsanz/Projects/urba/poc/great_expectations/test/venv/lib/python3.8/site-packages/great_expectations/core/usage_statistics/anonymizers/anonymizer.py", line 4, in <module>
    from great_expectations.util import load_class
  File "/home/jsanz/Projects/urba/poc/great_expectations/test/venv/lib/python3.8/site-packages/great_expectations/util.py", line 13, in <module>
    import importlib_metadata
ModuleNotFoundError: No module named 'importlib_metadata'

Expected behavior
Start the tutorial with no errors.

Environment (please complete the following information):

• OS: Ubuntu 18.04.4 LTS, Python 3.8.0 (default, Oct 28 2019, 16:14:01)
• GE Version: 0.11.6

Additional context
Running pip install importlib-metadata solves the issue.

[javier-sanz]

I think I might have been impacted by this bug https://bugs.python.org/issue34632

[Aylr]

I just replicated this

=================================== ERRORS ====================================

    from great_expectations.core import (
21
/opt/hostedtoolcache/Python/3.8.3/x64/lib/python3.8/site-packages/great_expectations/__init__.py:7: in <module>
22
    from great_expectations.data_context import DataContext
23
/opt/hostedtoolcache/Python/3.8.3/x64/lib/python3.8/site-packages/great_expectations/data_context/__init__.py:3: in <module>
24
    from .data_context import BaseDataContext, DataContext, ExplorerDataContext
25
/opt/hostedtoolcache/Python/3.8.3/x64/lib/python3.8/site-packages/great_expectations/data_context/data_context.py:29: in <module>
26
    from great_expectations.core.usage_statistics.usage_statistics import (
27
/opt/hostedtoolcache/Python/3.8.3/x64/lib/python3.8/site-packages/great_expectations/core/usage_statistics/usage_statistics.py:17: in <module>
28
    from great_expectations.core.usage_statistics.anonymizers.anonymizer import Anonymizer
29
/opt/hostedtoolcache/Python/3.8.3/x64/lib/python3.8/site-packages/great_expectations/core/usage_statistics/anonymizers/anonymizer.py:4: in <module>
30
    from great_expectations.util import load_class
31
/opt/hostedtoolcache/Python/3.8.3/x64/lib/python3.8/site-packages/great_expectations/util.py:13: in <module>
32
    import importlib_metadata

[sbrugman]

Same here, importlib_metadata is not installed with pip install great-expectations (workaround pip install importlib_metadata works luckily)

[alexsherstinsky]

This has been fixed and will appear in the next release.

[alexsherstinsky]

The fix will be part of GE 0.11.8