You can try the below code which creates the new file with "write" acccess. 
import sys
def WriteFile():
    name = input('Enter name of the file: ')+'.py'  # Enter name of the file along with format
    try:
        file = open(name,'w')   # creates a new file or open one with write access
        file.close()
    except:
        print('error')           # if code doesn't work, print error
        sys.exit(0)
WriteFile()