Python Looping through File and downloading Images
Question: I am trying to loop through a text file with different website links to
download the images. I also want them to have a unique file name. Just a loop
counter as you see so the three images would be `1.jpg`, `2.jpg`, `3.jpg`. Yet
I am only getting the last image and the file is named `0.jpg`. I have tried a
couple of different methods but this seemed the best but still no luck. Any
suggestions on next steps?

    
    
    import urllib
    input_file = open('Urls1.txt','r')
    x=0
    for line in input_file:
        URL= line
    
    urllib.urlretrieve(URL, str(x) + ".jpg")
    x+=1
    


Answer: rewrite the code by indenting the last two lines thus

    
    
    import urllib
    input_file = open('Urls1.txt','r')
    x=0
    for line in input_file:
        URL= line
    
        urllib.urlretrieve(URL, str(x) + ".jpg")
        x+=1
    

Indentation is significant in Python. Without it, the last two statements are
only executed after the loop has completed. Thus you only retrieve the last
URL in the file.

