I read a sentence:
Like I said earlier, it’s totally worth spending some time getting a good grip on how key funcs work in Python.
Get a grip in Oxford Dictionaries means: Keep or recover one's self-control. but it doesn't make sense.
I guess 'getting a good grip' means 'learning' in the context.
Is it a good practice to use 'get a grip' as synonyms of 'learn'?