Take user input data

print("Writing into file.....")

f1=open("file.txt","w")             //Opening a file in write  (existing or non-existing)

f1.read(input())                       //Taking user input to write into file

f1.close()                                //Closing file 

f1=open("file.txt","r")               //Opening file to read data

print(f1.read())                        //Reading data from file

f1.close()                               //Closing file