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Description
Description of Problem
Since GitPython 2.1.4, the initialimport git fails because it invokes the git CLI, raising agit.exc.GitCommandNotFound error. However, due to the chicken-and-egg nature of this import, it is impossible for one to catch agit.exc.GitCommandNotFound error.
Steps to Reproduce
Install GitPython >= 2.1.4 on a box without git installed on it. An easy way to do this is to launch a Cent 7 docker container (which does not come with git installed off the base image), and then install GitPython (first installing EPEL repo and pip for ease of installation).
% docker run --rm -it centos:7 bash[root@c1c079f693dc /]# yum --quiet -y install epel-releasewarning: /var/cache/yum/x86_64/7/extras/packages/epel-release-7-9.noarch.rpm: Header V3 RSA/SHA256 Signature, key ID f4a80eb5: NOKEYPublic key for epel-release-7-9.noarch.rpm is not installedImporting GPG key 0xF4A80EB5: Userid : "CentOS-7 Key (CentOS 7 Official Signing Key) <security@centos.org>" Fingerprint: 6341 ab27 53d7 8a78 a7c2 7bb1 24c6 a8a7 f4a8 0eb5 Package : centos-release-7-3.1611.el7.centos.x86_64 (@CentOS) From : /etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7[root@c1c079f693dc /]# yum --quiet -y install python-pipwarning: /var/cache/yum/x86_64/7/epel/packages/python2-pip-8.1.2-5.el7.noarch.rpm: Header V3 RSA/SHA256 Signature, key ID 352c64e5: NOKEYPublic key for python2-pip-8.1.2-5.el7.noarch.rpm is not installedImporting GPG key 0x352C64E5: Userid : "Fedora EPEL (7) <epel@fedoraproject.org>" Fingerprint: 91e9 7d7c 4a5e 96f1 7f3e 888f 6a2f aea2 352c 64e5 Package : epel-release-7-9.noarch (@extras) From : /etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-7[root@c1c079f693dc /]# command -v git && echo git is installed || echo git is not installedgit is not installedroot@c1c079f693dc /]# pip install GitPythonCollecting GitPython Downloading GitPython-2.1.5-py2.py3-none-any.whl (443kB) 100% |################################| 450kB 1.0MB/sCollecting gitdb2>=2.0.0 (from GitPython) Downloading gitdb2-2.0.2-py2.py3-none-any.whl (63kB) 100% |################################| 71kB 2.1MB/sCollecting smmap2>=2.0.0 (from gitdb2>=2.0.0->GitPython) Downloading smmap2-2.0.3-py2.py3-none-any.whlInstalling collected packages: smmap2, gitdb2, GitPythonSuccessfully installed GitPython-2.1.5 gitdb2-2.0.2 smmap2-2.0.3You are using pip version 8.1.2, however version 9.0.1 is available.You should consider upgrading via the 'pip install --upgrade pip' command.Now attempt to import:
[root@c1c079f693dc /]# python -c 'import git'Traceback (most recent call last): File "<string>", line 1, in <module> File "/usr/lib/python2.7/site-packages/git/__init__.py", line 45, in <module> from git.repo import Repo # @NoMove @IgnorePep8 File "/usr/lib/python2.7/site-packages/git/repo/__init__.py", line 4, in <module> from .base import * File "/usr/lib/python2.7/site-packages/git/repo/base.py", line 31, in <module> from git.remote import Remote, add_progress, to_progress_instance File "/usr/lib/python2.7/site-packages/git/remote.py", line 190, in <module> class FetchInfo(object): File "/usr/lib/python2.7/site-packages/git/remote.py", line 219, in FetchInfo v = Git().version_info[:2] File "/usr/lib/python2.7/site-packages/git/cmd.py", line 461, in version_info return self._version_info File "/usr/lib/python2.7/site-packages/git/cmd.py", line 424, in __getattr__ return LazyMixin.__getattr__(self, name) File "/usr/lib/python2.7/site-packages/gitdb/util.py", line 256, in __getattr__ self._set_cache_(attr) File "/usr/lib/python2.7/site-packages/git/cmd.py", line 444, in _set_cache_ version_numbers = self._call_process('version').split(' ')[2] File "/usr/lib/python2.7/site-packages/git/cmd.py", line 877, in _call_process return self.execute(call, **exec_kwargs) File "/usr/lib/python2.7/site-packages/git/cmd.py", line 602, in execute raise GitCommandNotFound(command, err)git.exc.GitCommandNotFound: Cmd('git') not found due to: OSError('[Errno 2] No such file or directory') cmdline: git versionIf you then downgrade to before version 2.1.4, the import works fine since the initial import no longer seems to be trying to invoke the git CLI:
[root@c1c079f693dc /]# pip install 'GitPython<2.1.4'Collecting GitPython<2.1.4 Downloading GitPython-2.1.3-py2.py3-none-any.whl (442kB) 100% |################################| 450kB 993kB/sRequirement already satisfied (use --upgrade to upgrade): gitdb2>=2.0.0 in /usr/lib/python2.7/site-packages (from GitPython<2.1.4)Requirement already satisfied (use --upgrade to upgrade): smmap2>=2.0.0 in /usr/lib/python2.7/site-packages (from gitdb2>=2.0.0->GitPython<2.1.4)Installing collected packages: GitPython Found existing installation: GitPython 2.1.5 Uninstalling GitPython-2.1.5: Successfully uninstalled GitPython-2.1.5Successfully installed GitPython-2.1.3You are using pip version 8.1.2, however version 9.0.1 is available.You should consider upgrading via the 'pip install --upgrade pip' command.[root@c1c079f693dc /]# python -c 'import git'[root@c1c079f693dc /]#Metadata
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