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pickle Pickle is one of the python standard libraries for object serialization/deserialization. Pickle serialization saves objects into a file in byte format while deserialization is the reverse of serialization. While trying to serialize an object into a pickle file, it is necessary to state the byte/binary format first otherwise, you will run into an error. Several objects such as lists, tuple..

sys.path A list of strings that specifies the search path for directory. In this path, some paths already have been added such as absolute path of .py file directory by default. sys.path >>> ['/Users/joohyunyoon/.pyenv/versions/anaconda3-2021.05/envs/sensor_fusion/lib/python37.zip' ... getcwd Get the pathname of the Current Working Directory. os.getcwd() >>> '/Users/joohyunyoon/workspace/sensor_..

assert If a condition in your code returns True, if not, the program will raise an AssertionError. def cal(nums): assert len(nums)>0, "list must not be empty" total=sum(nums) avg=total/len(nums) return avg data=[5, 10, 15, 20] result=cal(data) result >>> 12.5 You can write a message to be written if the code returns False. def cal(nums): assert len(nums)>0, "list must not be empty" total=sum(num..

return vs yield Generator can create data instantly without creating multiple data in advance. def return_abc(): return list("ABC") def yield_abc(): yield "A" yield "B" yield "C" >>> print(return_abc()) ['A', 'B', 'C'] >>> print(yield_abc()) yield vs yield from With yield from, it transformates list immediately. def yield_abc(): for ch in ["A", "B", "C"]: yield ch def yield_abc(): yield from ["A..