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primes = [2,3,5,7..] (prime numbers) map(lambda x:print(x),primes) It does not print anything. Why is that? I've tried
sys.stdout.write(x) too, but doesn't work either.
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Do a hard reset on your printer. To do this you just need to turn off your printer, unplug for a few minutes and then plug the printer again. If that still doesn't work, try turning the printer and your computer off, and then start it back up again. Try uninstalling and then reinstalling your printer driver.
Python map() function map() function returns a map object(which is an iterator) of the results after applying the given function to each item of a given iterable (list, tuple etc.) Parameters : fun : It is a function to which map passes each element of given iterable. iter : It is a iterable which is to be mapped.
Python's map() is a built-in function that allows you to process and transform all the items in an iterable without using an explicit for loop, a technique commonly known as mapping. map() is useful when you need to apply a transformation function to each item in an iterable and transform them into a new iterable.
Since lambda x: print(x) is a syntax error in Python < 3, I'm assuming Python 3. That means map returns a generator, meaning to get map to actually call the function on every element of a list, you need to iterate through the resultant generator.
Fortunately, this can be done easily:
list(map(lambda x:print(x),primes)) Oh, and you can get rid of the lambda too, if you like:
list(map(print,primes)) But, at that point you are better off with letting print handle it:
print(*primes, sep='\n') NOTE: I said earlier that '\n'.join would be a good idea. That is only true for a list of str's.
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