String operations to remove white spaces

s=" t  ioi ii "
t1=s.rstrip() # removes trailing white space
t2=s.lstrip() # removes leading white space
t3=s.strip()  # removes leading and trailing white space

print s

print t1

print t2

print t3

File operation for copying content of one file to another without for loop

#  Implementation without for loop
#  Copying content of 1.txt file to 2.txt after creation of file
#  Please provide the 1.txt file in the current folder as input and
#  check after runing the program in the same folder for 2.txt

I=open('1.txt',"r")
O=open('2.txt',"w")
C=I.readlines()
O.writelines(C)
I.close()
O.close()