If you are a programmer then you would already be knowing basics of programming languages, logics of programs etc. so you would mainly need to concentrate on the syntax part which takes, in Python’s case, approximately 1 month. If you are a newbie, then it will take around 3 months if you spend no more than 4 hours/day. However, if you are starting to learn Python programming online then you must see our list below containing important topics which may take the most time.Using ‘os’, ‘sys’, ‘argparse’ moduleLearning ‘list’ data structureSlicing in PythonUse of ‘set’ and ‘dictionaries’ in real-life problemsGenerators for memory managementFile I/OImporting/Exporting modules