1)Problem1.py contains the code for retreiving all the common keys having the same values in the dictionary. 2)Problem2.py contain the code to check if a string is palindrome or not 3)Problem3.py contains the code to find the error logs in a file and log the errors to another file using python. 4)Problem4.py contains the code to implement change directory (cd) using python 5)Problem5 folder contains the webpage to implement Insert, Delete, Search and Update operations using JavaScript.

To run any python script, Please open CMD and enter: python

The file also contains "log1.txt" which is a pre-defined error log file in python.If you want to create an error log file, you can use the "logging" package in python.