Download Learn Python the hard way by Shaw Z. PDF

By Shaw Z.

ISBN-10: 0557798191

ISBN-13: 9780557798193

Study Python The demanding method is a ebook I wrote to educate programming to those who don't know tips on how to code. It assumes you're most likely an influence person of your desktop, after which takes you from not anything to programming basic video games. After studying my e-book try to be prepared for lots of of the opposite programming books available in the market.

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It’ll be very short but will give you some ideas about other things you can do with files. path import exists 3 4 script, from_file, to_file = argv 5 6 print "Copying from %s to %s" % (from_file, to_file) 7 8 9 10 # we could do these two on one line too, how? read() 11 12 print "The input file is %d bytes long" % len(indata) 13 14 15 16 print "Does the output file exist? close() You should immediately notice that we import another handy command named exists. This returns True if a file exists, based on it’s name in a string as an argument.

In your editor. • read – Reads the contents of the file, you can assign the result to a variable. • readline – Reads just one line of a text file. • truncate – Empties the file, watch out if you care about the file. • write(stuff) – Writes stuff to the file. For now these are the important commands you need to know. Some of them take parameters, but we do not really care about that. You only need to remember that write takes a parameter of a string you want to write to the file. " target = open(filename, 'w') 13 14 15 print "Truncating the file.

Next to each word or symbol, write its name and what it does. If you can’t find a name for a symbol in this book, then look for it online. If you do not know what a word or symbol does, then go read about it again and try using it in some code. You may run into a few things you just can’t find out or know, so just keep those on the list and be ready to look them up when you find them. Once you have your list, spend a few days rewriting the list and double checking that it’s correct. This may get boring but push through and really nail it down.

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