Writing to file

write_2_file.py

#Comparing write method to print method to writing to file.


def main():
    fname = input("Enter filename: ")
    dfname = input("Destination Filename: ")
    infile = open(fname, "r")
    with open(dfname, "a") as f:
        data = infile.read()
        infile.close()
        f.write("This is a new line number 0\n\n")
        f.write(data)
    f.closed
main()
                                                                                                                                   

'''
In [41]: ls -l                                                                                                                                   
total 16
-rw-r--r-- 1 pi pi 50 Nov  8 09:54 test001.txt
-rw-r--r-- 1 pi pi 51 Nov  8 10:07 test002.txt
-rw-r--r-- 1 pi pi 72 Nov  8 10:11 test003.txt
-rw-r--r-- 1 pi pi 79 Nov  8 10:35 test005.txt

In [42]: main()                                                                                                                                  
Enter filename: test001.txt
Destination Filename: test004.txt

In [43]: cat test004.txt                                                                                                                         
This is a new line number 0

This is a test file.

line 2
line 3

line 4

end


In [44]:  
'''