NOTE:

Full course link :- https://www.youtube.com/watch?v=rfscVS0vtbw

These videos will clear all your basics, however to tackle questions in PAT/CAT/FAT you must solve problems regularly on all the above mentioned topics. The platform I found the best for this is Hackerrank. https://www.hackerrank.com/domains/python

Pseudocode: https://www.youtube.com/watch?v=preyTbKXDoQ

Operators and Expressions in Python: https://www.youtube.com/watch?v=hecHkaSt4iY

Loops: https://www.youtube.com/watch?v=0ZvaDa8eT5s (For) https://www.youtube.com/watch?v=HZARImviDxg (While) https://www.youtube.com/watch?v=6vPHm7z_n0M (Do while)

1. Dictionaries: https://www.youtube.com/watch?v=ZEZdys-fHDw

2. Tuple and Sets: https://www.youtube.com/watch?v=Mf7eFtbVxFM

   
   

Regular Expressions: https://www.youtube.com/watch?v=WQlKPdKVXfw

Sorting: https://www.youtube.com/watch?v=Vca808JTbI8 (Bubble) https://www.youtube.com/watch?v=byHi41L9vTM (Insertion) https://www.youtube.com/watch?v=4CykZVqBuCw (Selection)

Recursion: https://www.youtube.com/watch?v=XkL3SUioNvo

File Handling: https://www.youtube.com/watch?v=M-t4ILRHnxE ; https://www.youtube.com/watch?v=N8X-fhGLkoM

Numpy: https://www.youtube.com/watch?v=xECXZ3tyONo

Pandas: https://www.youtube.com/watch?v=iGFdh6_FePU