Pandas update: Fixed some bugs that caused future warnings in pandas

[jerryinyang]

MAJOR FIXES:
-_plotting\core.py : FutureWarning was raised by some lines of code; attempting to set a value on a copy of a DataFrame or Series through chained assignment using an inplace method.

• _plotting\core.py and reports.py : Replaced the deprecated pandas frequency labels: M, Q, and A (all depreacted) to ME, QE and YE.

MINOR FIXES:

• Sorted imports (linted code) in the above mentioned files

Previous (now removed) warning messages from the above

FutureWarning: A value is trying to be set on a copy of a DataFrame or Series through chained assignment using an inplace method.
The behavior will change in pandas 3.0. This inplace method will never work because the intermediate object on which we are setting values always behaves as a copy.

For example, when doing 'df[col].method(value, inplace=True)', try using 'df.method({col: value}, inplace=True)' or df[col] = df[col].method(value) instead, to perform the operation inplace on the original object.


  port["Weekly"].ffill(inplace=True)


FutureWarning: 'M' is deprecated and will be removed in a future version, please use 'ME' instead.
  port["Monthly"] = port["Daily"].resample("M").apply(apply_fnc)



FutureWarning: A value is trying to be set on a copy of a DataFrame or Series through chained assignment using an inplace method.
The behavior will change in pandas 3.0. This inplace method will never work because the intermediate object on which we are setting values always behaves as a copy.

For example, when doing 'df[col].method(value, inplace=True)', try using 'df.method({col: value}, inplace=True)' or df[col] = df[col].method(value) instead, to perform the operation inplace on the original object.


  port["Monthly"].ffill(inplace=True)



FutureWarning: 'Q' is deprecated and will be removed in a future version, please use 'QE' instead.
  port["Quarterly"] = port["Daily"].resample("Q").apply(apply_fnc)



FutureWarning: A value is trying to be set on a copy of a DataFrame or Series through chained assignment using an inplace method.
The behavior will change in pandas 3.0. This inplace method will never work because the intermediate object on which we are setting values always behaves as a copy.

For example, when doing 'df[col].method(value, inplace=True)', try using 'df.method({col: value}, inplace=True)' or df[col] = df[col].method(value) instead, to perform the operation inplace on the original object.


  port["Quarterly"].ffill(inplace=True)



FutureWarning: 'A' is deprecated and will be removed in a future version, please use 'YE' instead.
  port["Yearly"] = port["Daily"].resample("A").apply(apply_fnc)



FutureWarning: A value is trying to be set on a copy of a DataFrame or Series through chained assignment using an inplace method.
The behavior will change in pandas 3.0. This inplace method will never work because the intermediate object on which we are setting values always behaves as a copy.

For example, when doing 'df[col].method(value, inplace=True)', try using 'df.method({col: value}, inplace=True)' or df[col] = df[col].method(value) instead, to perform the operation inplace on the original object.