How Do I Convert a Map Iterator to a List in Python 3.x?

Retrieving a List from a Map in Python 3.x

In Python 2.6, mapping an iterable to a new value using the map function returned a list. However, in Python 3.x, the map function returns an iterator, which can be more memory-efficient.

To retrieve the mapped values as a list in Python 3.x, you can use the list constructor:

my_list = list(map(chr, [66, 53, 0, 94]))

Alternative Approaches

Alternatively, there are other ways to convert an iterable to a list of hex values:

• Using a list comprehension:

my_list = [hex(i) for i in [66, 53, 0, 94]]

• Using the join function with a generator expression:

my_list = list("\x" + hex(i)[2:] for i in [66, 53, 0, 94])

Performance Considerations

In general, using a list comprehension is more efficient than using a loop with a map object. However, if you need to iterate over the values multiple times, using a map object can save memory since it lazily produces values.

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