2018.11.14 pipenv emits pythons errors when creating a virtualenv

[command-tab]

Issue description

$ pipenv --two
Error %s while executing command %s [Errno 2] No such file or directory: '/usr/local/bin/pythonz': '/usr/local/bin/pythonz' /usr/local/bin/pythonz -c import sys; print(sys.version.split()[0])
['Traceback (most recent call last):\n', '  File "/usr/local/lib/python3.6/site-packages/pipenv/vendor/vistir/contextmanagers.py", line 148, in spinner\n    yield _spinner\n', '  File "/usr/local/lib/python3.6/site-packages/pipenv/vendor/vistir/misc.py", line 309, in run\n    start_text=start_text\n', '  File "/usr/local/lib/python3.6/site-packages/pipenv/vendor/vistir/misc.py", line 157, in _create_subprocess\n    combine_stderr=combine_stderr)\n', '  File "/usr/local/lib/python3.6/site-packages/pipenv/vendor/vistir/misc.py", line 132, in _spawn_subprocess\n    return subprocess.Popen(cmd, **options)\n', '  File "/usr/local/Cellar/python/3.6.5_1/Frameworks/Python.framework/Versions/3.6/lib/python3.6/subprocess.py", line 709, in __init__\n    restore_signals, start_new_session)\n', '  File "/usr/local/Cellar/python/3.6.5_1/Frameworks/Python.framework/Versions/3.6/lib/python3.6/subprocess.py", line 1344, in _execute_child\n    raise child_exception_type(errno_num, err_msg, err_filename)\n', "FileNotFoundError: [Errno 2] No such file or directory: '/usr/local/bin/pythonz': '/usr/local/bin/pythonz'\n"]
Error %s while executing command %s [Errno 2] No such file or directory: '/usr/local/bin/pythonz': '/usr/local/bin/pythonz' /usr/local/bin/pythonz -c import sys; print(sys.version.split()[0])
['Traceback (most recent call last):\n', '  File "/usr/local/lib/python3.6/site-packages/pipenv/vendor/vistir/contextmanagers.py", line 148, in spinner\n    yield _spinner\n', '  File "/usr/local/lib/python3.6/site-packages/pipenv/vendor/vistir/misc.py", line 309, in run\n    start_text=start_text\n', '  File "/usr/local/lib/python3.6/site-packages/pipenv/vendor/vistir/misc.py", line 157, in _create_subprocess\n    combine_stderr=combine_stderr)\n', '  File "/usr/local/lib/python3.6/site-packages/pipenv/vendor/vistir/misc.py", line 132, in _spawn_subprocess\n    return subprocess.Popen(cmd, **options)\n', '  File "/usr/local/Cellar/python/3.6.5_1/Frameworks/Python.framework/Versions/3.6/lib/python3.6/subprocess.py", line 709, in __init__\n    restore_signals, start_new_session)\n', '  File "/usr/local/Cellar/python/3.6.5_1/Frameworks/Python.framework/Versions/3.6/lib/python3.6/subprocess.py", line 1344, in _execute_child\n    raise child_exception_type(errno_num, err_msg, err_filename)\n', "FileNotFoundError: [Errno 2] No such file or directory: '/usr/local/bin/pythonz': '/usr/local/bin/pythonz'\n"]

Expected result

Expected no error logging while simply creating a virtualenv

Actual result

virtualenv creation appears to have worked, but unexpected errors were emitted.

Steps to replicate

1. Run pipenv --two to create a Python 2.7 virtualenv
2. Observe errors

$ pipenv --support

Pipenv version: '2018.11.14'

Pipenv location: '/usr/local/lib/python3.6/site-packages/pipenv'

Python location: '/usr/local/opt/python/bin/python3.6'

Python installations found:

Error %s while executing command %s [Errno 2] No such file or directory: '/usr/local/bin/pythonz': '/usr/local/bin/pythonz' /usr/local/bin/pythonz -c import sys; print(sys.version.split()[0])
['Traceback (most recent call last):\n', ' File "/usr/local/lib/python3.6/site-packages/pipenv/vendor/vistir/contextmanagers.py", line 148, in spinner\n yield _spinner\n', ' File "/usr/local/lib/python3.6/site-packages/pipenv/vendor/vistir/misc.py", line 309, in run\n start_text=start_text\n', ' File "/usr/local/lib/python3.6/site-packages/pipenv/vendor/vistir/misc.py", line 157, in _create_subprocess\n combine_stderr=combine_stderr)\n', ' File "/usr/local/lib/python3.6/site-packages/pipenv/vendor/vistir/misc.py", line 132, in _spawn_subprocess\n return subprocess.Popen(cmd, **options)\n', ' File "/usr/local/Cellar/python/3.6.5_1/Frameworks/Python.framework/Versions/3.6/lib/python3.6/subprocess.py", line 709, in init\n restore_signals, start_new_session)\n', ' File "/usr/local/Cellar/python/3.6.5_1/Frameworks/Python.framework/Versions/3.6/lib/python3.6/subprocess.py", line 1344, in _execute_child\n raise child_exception_type(errno_num, err_msg, err_filename)\n', "FileNotFoundError: [Errno 2] No such file or directory: '/usr/local/bin/pythonz': '/usr/local/bin/pythonz'\n"]
Error %s while executing command %s [Errno 2] No such file or directory: '/usr/local/bin/pythonz': '/usr/local/bin/pythonz' /usr/local/bin/pythonz -c import sys; print(sys.version.split()[0])
['Traceback (most recent call last):\n', ' File "/usr/local/lib/python3.6/site-packages/pipenv/vendor/vistir/contextmanagers.py", line 148, in spinner\n yield _spinner\n', ' File "/usr/local/lib/python3.6/site-packages/pipenv/vendor/vistir/misc.py", line 309, in run\n start_text=start_text\n', ' File "/usr/local/lib/python3.6/site-packages/pipenv/vendor/vistir/misc.py", line 157, in _create_subprocess\n combine_stderr=combine_stderr)\n', ' File "/usr/local/lib/python3.6/site-packages/pipenv/vendor/vistir/misc.py", line 132, in _spawn_subprocess\n return subprocess.Popen(cmd, **options)\n', ' File "/usr/local/Cellar/python/3.6.5_1/Frameworks/Python.framework/Versions/3.6/lib/python3.6/subprocess.py", line 709, in init\n restore_signals, start_new_session)\n', ' File "/usr/local/Cellar/python/3.6.5_1/Frameworks/Python.framework/Versions/3.6/lib/python3.6/subprocess.py", line 1344, in _execute_child\n raise child_exception_type(errno_num, err_msg, err_filename)\n', "FileNotFoundError: [Errno 2] No such file or directory: '/usr/local/bin/pythonz': '/usr/local/bin/pythonz'\n"]

• 3.6.5: /usr/local/bin/python3
• 3.6.5: /usr/local/bin/python3.6m
• 2.7.15: /usr/local/bin/python
• 2.7.15: /usr/local/bin/pythonw
• 2.7.10: /usr/bin/python
• 2.7.10: /usr/bin/pythonw
• 2.7.10: /usr/bin/python2.7

PEP 508 Information:

{'implementation_name': 'cpython',
 'implementation_version': '3.6.5',
 'os_name': 'posix',
 'platform_machine': 'x86_64',
 'platform_python_implementation': 'CPython',
 'platform_release': '17.7.0',
 'platform_system': 'Darwin',
 'platform_version': 'Darwin Kernel Version 17.7.0: Thu Jun 21 22:53:14 PDT '
                     '2018; root:xnu-4570.71.2~1/RELEASE_X86_64',
 'python_full_version': '3.6.5',
 'python_version': '3.6',
 'sys_platform': 'darwin'}

System environment variables:

• LC_ALL
• PYENV_VIRTUALENV_DISABLE_PROMPT
• LANG
• XPC_FLAGS
• HISTCONTROL
• LESS
• DISPLAY
• TERM_SESSION_ID
• EDITOR
• __CF_USER_TEXT_ENCODING
• GIT_EDITOR
• SSH_AUTH_SOCK
• USER
• PAGER
• LSCOLORS
• ROOT
• RBENV_SHELL
• SSH_CLIENT_USER
• PWD
• MANPAGER
• HOME
• TERM_PROGRAM
• TERM_PROGRAM_VERSION
• Apple_PubSub_Socket_Render
• SVN_EDITOR
• TMPDIR
• PIPENV_NOSPIN
• XPC_SERVICE_NAME
• TERM
• SHELL
• TNS_ADMIN
• VAULT_ADDR
• PYTHONDONTWRITEBYTECODE
• SHLVL
• MANPATH
• LOGNAME
• PATH
• PIPENV_HIDE_EMOJIS
• GCCDIR
• HOMEBREW_GITHUB_API_TOKEN
• _
• OLDPWD
• PIP_DISABLE_PIP_VERSION_CHECK
• PIP_SHIMS_BASE_MODULE
• PIP_PYTHON_PATH
• PYTHONFINDER_IGNORE_UNSUPPORTED

Pipenv–specific environment variables:

• PIPENV_NOSPIN: 1
• PIPENV_HIDE_EMOJIS: 1

Debug–specific environment variables:

• PATH: /usr/sbin:/usr/local/bin:/usr/local/sbin:/Users/callen/.rbenv/shims:/usr/local/bin:/usr/bin:/bin:/opt/X11/bin
• SHELL: /bin/bash
• EDITOR: /usr/local/bin/mate -w
• LANG: en_US.UTF-8
• PWD: /Users/callen/testapp

---

Contents of Pipfile ('/Users/callen/testapp/Pipfile'):

[[source]]
name = "pypi"
url = "https://pypi.org/simple"
verify_ssl = true

[dev-packages]

[packages]

[requires]
python_version = "2.7"

[duplicate-issues]

Hey @commandtab,

We did a quick check and this issue looks very darn similar to

• #3228 - 2018.11.14 regression: `pipenv lock -r` with named Pipfile
• #3226 - Don't disable --user when --system is passed
• #3225 - Fix encoding issues and python discovery

This could be a coincidence, but if any of these issues solves your problem then I did a good job 😄

If not, the maintainers will get to this issue shortly.

Cheers,
Your Friendly Neighborhood ProBot

[jakul]

I was able to work around this by specifying the path to the Python executable, i.e.

$ pipenv install --dev --python `which python3.6`

[jakul]

Looks like this is fixed in pythonfinder v1.1.9, but Pipenv is currently vendoring 1.0.2