@Ritik, You can use the copyfile() function present in shutil:
from shutil import copyfile
copyfile(file_name1, file_name2)
The function copyfile() will copy the contents of file_name1 into file_name2. If file_name2 already exists then it will get replaced, the location of file_name2 must be writable to avoid raising IOError exception.
Note: special files cannot be copied using this function.