Only install pyecharts-jupyter-installer if __name__ == '__main__'

[jayvdb]

Importing setup.py should not run anything.

> py2pack generate pyexcel-handsontable
generating spec file for pyexcel-handsontable...
Could not install packages due to an EnvironmentError: [Errno 13] Permission denied: '/usr/lib/python3.7/site-packages/pyecharts_jupyter_installer'
Consider using the `--user` option or check the permissions.

Traceback (most recent call last):
  File "setup.py", line 11, in <module>
    from pyecharts_jupyter_installer import install_cmd_for
ModuleNotFoundError: No module named 'pyecharts_jupyter_installer'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "setup.py", line 17, in <module>
    'pip', 'install', 'pyecharts-jupyter-installer'])
  File "/usr/lib64/python3.7/subprocess.py", line 347, in check_call
    raise CalledProcessError(retcode, cmd)
subprocess.CalledProcessError: Command '['/usr/bin/python3', '-m', 'pip', 'install', 'pyecharts-jupyter-installer']' returned non-zero exit status 1.
Traceback (most recent call last):
  File "/usr/lib/python3.7/site-packages/metaextract/utils.py", line 105, in _setup_py_run_from_dir
    subprocess.check_output(cmd, stderr=subprocess.STDOUT, shell=True)
  File "/usr/lib64/python3.7/subprocess.py", line 395, in check_output
    **kwargs).stdout
  File "/usr/lib64/python3.7/subprocess.py", line 487, in run
    output=stdout, stderr=stderr)
subprocess.CalledProcessError: Command '/usr/bin/python3 setup.py -q --command-packages metaextract metaextract -o /tmp/tmp0d5_kv0t ' returned non-zero exit status 1.

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/bin/py2pack", line 10, in <module>
    sys.exit(main())
  File "/usr/lib/python3.7/site-packages/py2pack/__init__.py", line 350, in main
    args.func(args)
  File "/usr/lib/python3.7/site-packages/py2pack/__init__.py", line 252, in generate
    _augment_data_from_tarball(args, tarball_file[0], data)
  File "/usr/lib/python3.7/site-packages/py2pack/__init__.py", line 155, in _augment_data_from_tarball
    data_archive = meta_utils.from_archive(filename)
  File "/usr/lib/python3.7/site-packages/metaextract/utils.py", line 134, in from_archive
    data = _setup_py_run_from_dir(root_dir, py_interpreter)
  File "/usr/li> py2pack generate pyexcel-handsontable
generating spec file for pyexcel-handsontable...
Could not install packages due to an EnvironmentError: [Errno 13] Permission denied: '/usr/lib/python3.7/site-packages/pyecharts_jupyter_installer'
Consider using the `--user` option or check the permissions.

Traceback (most recent call last):
  File "setup.py", line 11, in <module>
    from pyecharts_jupyter_installer import install_cmd_for
ModuleNotFoundError: No module named 'pyecharts_jupyter_installer'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "setup.py", line 17, in <module>
    'pip', 'install', 'pyecharts-jupyter-installer'])
  File "/usr/lib64/python3.7/subprocess.py", line 347, in check_call
    raise CalledProcessError(retcode, cmd)
subprocess.CalledProcessError: Command '['/usr/bin/python3', '-m', 'pip', 'install', 'pyecharts-jupyter-installer']' returned non-zero exit status 1.
Traceback (most recent call last):
  File "/usr/lib/python3.7/site-packages/metaextract/utils.py", line 105, in _setup_py_run_from_dir
    subprocess.check_output(cmd, stderr=subprocess.STDOUT, shell=True)
  File "/usr/lib64/python3.7/subprocess.py", line 395, in check_output
    **kwargs).stdout
  File "/usr/lib64/python3.7/subprocess.py", line 487, in run
    output=stdout, stderr=stderr)
subprocess.CalledProcessError: Command '/usr/bin/python3 setup.py -q --command-packages metaextract metaextract -o /tmp/tmp0d5_kv0t ' returned non-zero exit status 1.

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/bin/py2pack", line 10, in <module>
    sys.exit(main())
  File "/usr/lib/python3.7/site-packages/py2pack/__init__.py", line 350, in main
    args.func(args)
  File "/usr/lib/python3.7/site-packages/py2pack/__init__.py", line 252, in generate
    _augment_data_from_tarball(args, tarball_file[0], data)
  File "/usr/lib/python3.7/site-packages/py2pack/__init__.py", line 155, in _augment_data_from_tarball
    data_archive = meta_utils.from_archive(filename)
  File "/usr/lib/python3.7/site-packages/metaextract/utils.py", line 134, in from_archive
    data = _setup_py_run_from_dir(root_dir, py_interpreter)
  File "/usr/lib/python3.7/site-packages/metaextract/utils.py", line 109, in _setup_py_run_from_dir
    subprocess.check_output(cmd, shell=True)
  File "/usr/lib64/python3.7/subprocess.py", line 395, in check_output
    **kwargs).stdout
  File "/usr/lib64/python3.7/subprocess.py", line 487, in run
    output=stdout, stderr=stderr)
subprocess.CalledProcessError: Command '/usr/bin/python3 setup.py -q --command-packages metaextract metaextract -o /tmp/tmp0d5_kv0t ' returned non-zero exit status 1.
b/python3.7/site-packages/metaextract/utils.py", line 109, in _setup_py_run_from_dir
    subprocess.check_output(cmd, shell=True)
  File "/usr/lib64/python3.7/subprocess.py", line 395, in check_output
    **kwargs).stdout
  File "/usr/lib64/python3.7/subprocess.py", line 487, in run
    output=stdout, stderr=stderr)
subprocess.CalledProcessError: Command '/usr/bin/python3 setup.py -q --command-packages metaextract metaextract -o /tmp/tmp0d5_kv0t ' returned non-zero exit status 1.

[jayvdb]

Also pyecharts_jupyter_installer shouldnt be installed if pyecharts is already installed.