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How Do I Convert a Python Map Object to a List?

Linda Hamilton
Linda HamiltonOriginal
2024-12-11 01:24:10207browse

How Do I Convert a Python Map Object to a List?

Retrieving a List from a Map

In Python 3.x, the map() function returns a map object rather than a list. To obtain the mapped list, developers must explicitly convert the map object to a list.

To do this, use the following code:

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

Here, the map() function applies the chr() function to each element in the input list and returns a map object. The list() function then converts this map object into a list.

Alternative Approaches

Alternatively, if the mapped list is only used for iteration, it is not necessary to convert it to a list. The map object can be iterated over directly, as seen here:

# Prints "ABCD"
for ch in map(chr, [65, 66, 67, 68]):
    print(ch)

This approach can be more efficient in terms of memory usage, as iterators usually occupy less memory than lists.

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