Python resources added. (#7293)

src/data/roadmaps/python/content/loops@Dvy7BnNzK55qbh_SgOk8m.md

@@ -7,3 +7,4 @@ Visit the following resources to learn more:
 - [@article@Loops in Python](https://www.geeksforgeeks.org/loops-in-python/)
 - [@article@Python "while" Loops (Indefinite Iteration)](https://realpython.com/python-while-loop/)
 - [@article@Python "for" Loops (Definite Iteration)](https://realpython.com/python-for-loop/#the-guts-of-the-python-for-loop)
+- [@video@Python For Loops](https://www.youtube.com/watch?v=KWgYha0clzw)

src/data/roadmaps/python/content/object-oriented-programming@P_Di-XPSDITmU3xKQew8G.md

@@ -7,3 +7,4 @@ Visit the following resources to learn more:
 - [@article@Object Oriented Programming in Python](https://realpython.com/python3-object-oriented-programming/)
 - [@video@Object Oriented Programming (OOP) In Python - Beginner Crash Course](https://www.youtube.com/watch?v=-pEs-Bss8Wc/)
 - [@video@OOP in Python One Shot](https://www.youtube.com/watch?v=Ej_02ICOIgs)
+- [@video@Python OOP Tutorial](https://www.youtube.com/watch?v=IbMDCwVm63M)

src/data/roadmaps/python/content/variables-and-data-types@dEFLBGpiH6nbSMeR7ecaT.md

@@ -9,3 +9,5 @@ Visit the following resources to learn more:
 - [@article@Python Data Types](https://www.w3schools.com/python/python_datatypes.asp)
 - [@article@Basic Data Types in Python](https://realpython.com/python-data-types/)
 - [@article@Python for Beginners: Data Types](https://thenewstack.io/python-for-beginners-data-types/)
+- [@video@Python Variables and Data Types](https://www.youtube.com/playlist?list=PLBlnK6fEyqRhN-sfWgCU1z_Qhakc1AGOn)
+