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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"[GitPython \u003e= 2.1.4] Can't import without git CLI","articleBody":"## Description of Problem\r\n\r\nSince GitPython 2.1.4, the initial `import git` fails because it invokes the git CLI, raising a `git.exc.GitCommandNotFound` error. However, due to the chicken-and-egg nature of this import, it is impossible for one to catch a `git.exc.GitCommandNotFound` error.\r\n\r\n## Steps to Reproduce\r\n\r\nInstall GitPython \u003e= 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).\r\n\r\n```\r\n% docker run --rm -it centos:7 bash\r\n[root@c1c079f693dc /]# yum --quiet -y install epel-release\r\nwarning: /var/cache/yum/x86_64/7/extras/packages/epel-release-7-9.noarch.rpm: Header V3 RSA/SHA256 Signature, key ID f4a80eb5: NOKEY\r\nPublic key for epel-release-7-9.noarch.rpm is not installed\r\nImporting GPG key 0xF4A80EB5:\r\n Userid     : \"CentOS-7 Key (CentOS 7 Official Signing Key) \u003csecurity@centos.org\u003e\"\r\n Fingerprint: 6341 ab27 53d7 8a78 a7c2 7bb1 24c6 a8a7 f4a8 0eb5\r\n Package    : centos-release-7-3.1611.el7.centos.x86_64 (@CentOS)\r\n From       : /etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7\r\n[root@c1c079f693dc /]# yum --quiet -y install python-pip\r\nwarning: /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: NOKEY\r\nPublic key for python2-pip-8.1.2-5.el7.noarch.rpm is not installed\r\nImporting GPG key 0x352C64E5:\r\n Userid     : \"Fedora EPEL (7) \u003cepel@fedoraproject.org\u003e\"\r\n Fingerprint: 91e9 7d7c 4a5e 96f1 7f3e 888f 6a2f aea2 352c 64e5\r\n Package    : epel-release-7-9.noarch (@extras)\r\n From       : /etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-7\r\n[root@c1c079f693dc /]# command -v git \u0026\u0026 echo git is installed || echo git is not installed\r\ngit is not installed\r\nroot@c1c079f693dc /]# pip install GitPython\r\nCollecting GitPython\r\n  Downloading GitPython-2.1.5-py2.py3-none-any.whl (443kB)\r\n    100% |################################| 450kB 1.0MB/s\r\nCollecting gitdb2\u003e=2.0.0 (from GitPython)\r\n  Downloading gitdb2-2.0.2-py2.py3-none-any.whl (63kB)\r\n    100% |################################| 71kB 2.1MB/s\r\nCollecting smmap2\u003e=2.0.0 (from gitdb2\u003e=2.0.0-\u003eGitPython)\r\n  Downloading smmap2-2.0.3-py2.py3-none-any.whl\r\nInstalling collected packages: smmap2, gitdb2, GitPython\r\nSuccessfully installed GitPython-2.1.5 gitdb2-2.0.2 smmap2-2.0.3\r\nYou are using pip version 8.1.2, however version 9.0.1 is available.\r\nYou should consider upgrading via the 'pip install --upgrade pip' command.\r\n```\r\n\r\nNow attempt to import:\r\n\r\n```\r\n[root@c1c079f693dc /]# python -c 'import git'\r\nTraceback (most recent call last):\r\n  File \"\u003cstring\u003e\", line 1, in \u003cmodule\u003e\r\n  File \"/usr/lib/python2.7/site-packages/git/__init__.py\", line 45, in \u003cmodule\u003e\r\n    from git.repo import Repo               # @NoMove @IgnorePep8\r\n  File \"/usr/lib/python2.7/site-packages/git/repo/__init__.py\", line 4, in \u003cmodule\u003e\r\n    from .base import *\r\n  File \"/usr/lib/python2.7/site-packages/git/repo/base.py\", line 31, in \u003cmodule\u003e\r\n    from git.remote import Remote, add_progress, to_progress_instance\r\n  File \"/usr/lib/python2.7/site-packages/git/remote.py\", line 190, in \u003cmodule\u003e\r\n    class FetchInfo(object):\r\n  File \"/usr/lib/python2.7/site-packages/git/remote.py\", line 219, in FetchInfo\r\n    v = Git().version_info[:2]\r\n  File \"/usr/lib/python2.7/site-packages/git/cmd.py\", line 461, in version_info\r\n    return self._version_info\r\n  File \"/usr/lib/python2.7/site-packages/git/cmd.py\", line 424, in __getattr__\r\n    return LazyMixin.__getattr__(self, name)\r\n  File \"/usr/lib/python2.7/site-packages/gitdb/util.py\", line 256, in __getattr__\r\n    self._set_cache_(attr)\r\n  File \"/usr/lib/python2.7/site-packages/git/cmd.py\", line 444, in _set_cache_\r\n    version_numbers = self._call_process('version').split(' ')[2]\r\n  File \"/usr/lib/python2.7/site-packages/git/cmd.py\", line 877, in _call_process\r\n    return self.execute(call, **exec_kwargs)\r\n  File \"/usr/lib/python2.7/site-packages/git/cmd.py\", line 602, in execute\r\n    raise GitCommandNotFound(command, err)\r\ngit.exc.GitCommandNotFound: Cmd('git') not found due to: OSError('[Errno 2] No such file or directory')\r\n  cmdline: git version\r\n```\r\n\r\nIf 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:\r\n\r\n```\r\n[root@c1c079f693dc /]# pip install 'GitPython\u003c2.1.4'\r\nCollecting GitPython\u003c2.1.4\r\n  Downloading GitPython-2.1.3-py2.py3-none-any.whl (442kB)\r\n    100% |################################| 450kB 993kB/s\r\nRequirement already satisfied (use --upgrade to upgrade): gitdb2\u003e=2.0.0 in /usr/lib/python2.7/site-packages (from GitPython\u003c2.1.4)\r\nRequirement already satisfied (use --upgrade to upgrade): smmap2\u003e=2.0.0 in /usr/lib/python2.7/site-packages (from gitdb2\u003e=2.0.0-\u003eGitPython\u003c2.1.4)\r\nInstalling collected packages: GitPython\r\n  Found existing installation: GitPython 2.1.5\r\n    Uninstalling GitPython-2.1.5:\r\n      Successfully uninstalled GitPython-2.1.5\r\nSuccessfully installed GitPython-2.1.3\r\nYou are using pip version 8.1.2, however version 9.0.1 is available.\r\nYou should consider upgrading via the 'pip install --upgrade pip' command.\r\n[root@c1c079f693dc /]# python -c 'import git'\r\n[root@c1c079f693dc /]#\r\n```","author":{"url":"https://github.com/terminalmage","@type":"Person","name":"terminalmage"},"datePublished":"2017-08-10T21:08:55.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":3},"url":"https://github.com/657/GitPython/issues/657"}