Jun 11, 2012 · The Python 2 documentation says: Built-in Functions: map (function, iterable, ...) Apply function to every item of iterable and return a list of the results. If additional iterable …

In Python 3+, many processes that iterate over iterables return iterators themselves. In most cases, this ends up saving memory, and should make things go faster. If all you're going to do …

Oct 13, 2016 · In Python 3 many functions (not just map but zip, range and others) return an iterator rather than the full list. You might want an iterator (e.g. to avoid holding the whole list in …

Can you explain the use of the lambda function? I thought map passed the elements of the list as parameters to the function. How does the lambda function accept the objects as parameters?

In Python 2, map would apply a function to the values of an iterable and return a list. In Python 3, map returns an iterator that applies the function to the iterated values as you loop over it.

May 10, 2016 · I want to convert JSON data into a Python object. I receive JSON data objects from the Facebook API, which I want to store in my database. My current View in Django …

Jun 17, 2014 · 4 im new to Python (version 3.41) and I have a problem with printing the result of using map and filter function. How can I find these results?

Jun 9, 2017 · for i in F_temps: print(F_temps) <map object at 0x7f9aa050ff28> <map object at 0x7f9aa050ff28> <map object at 0x7f9aa050ff28> <map object at 0x7f9aa050ff28> I am not …

183 In Python 3, map returns an iterable object of type map, and not a subscriptible list, which would allow you to write map[i]. To force a list result, write

Feb 15, 2015 · 15 Although you refer to it as seq, the map object in Python 3 is not a sequence (it's an iterator, see what's new in Python 3). numpy.array needs a sequence so the len can be …