From coding

Question 1

for a df, do something to every row or every column

Answer 1

DataFrame.apply(func, axis=0, raw=False, result_type=None, args=(), by_row=’compat’, engine=’python’, engine_kwargs=None, **kwargs)

Question 2

Specify the return type of a function using Python’s type hints, e.g. specify returning a tuple with str, info, and exchange

Answer 2

code: -> typing.Tuple[str, Info, Exchange]:

Question 3

Random variable of a Standard Normal:

Answer 3

Z