How to handle gitpython clone exceptions?

Question

I'm trying to write a batch clone script with GitPython, however I can't find a valid example of hanlding such as git url not exsits, download interupt etc.

How could I actually do this？

my exsiting code:

giturl = 'https://github.com/'+username+'/'+hwName+'.git'
targeturl = os.path.join(hwfolder,username+'-'+hwName)
try:
    repo = Repo.clone_from(giturl, targeturl, branch='master')
except:
    #git url not reachable
    #download interupt
    #target local path problem

Seleneselenious

Gitpython has a list of custom exceptions here – Hiram

But clearly the exceptions there cannot cover all the situations. – Seleneselenious

GitPython appears to run the git binary for many operations, including clone. If so, clone failure will be represented as a generic command failure. (Interrupt is simply KeyboardInterrupt of course.) – Helvetic

Answer 1

For starters,

exception git.exc.GitError

Base class for all package exceptions

Then, who said you have to handle all, or any exceptions? You can only reasonably handle those that you can do something intelligent about. The underlying git and the TCP stack are already smart enough to handle transient problems like an unreliable connection, so if it failed, you can't, as a rule, just try again and hope it happens to work this time.

For the purpose of a batch job, just propagate the error upstream so that your script fails gracefully. E.g. in a .bat file, you need to write something like <command> || exit 1 for the script to terminate upon error rather than continue blindly.

---

Now, of your 3 specific cases:

• items 1 and 2 will probably make an underlying git fail, all of those cases yield GitCommandError
• NoSuchPathError is only ever raised on Repo initialization if the path to the local repo doesn't exist

Distillery