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Python: Difference between revisions
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====Array Indexing==== | ====Array Indexing==== | ||
[https://docs.scipy.org/doc/numpy/user/basics.indexing.html Scipy Reference] | [https://docs.scipy.org/doc/numpy/user/basics.indexing.html Scipy Reference] | ||
===Filesystem=== | ===Filesystem=== | ||
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<syntaxhighlight lang="python"> | <syntaxhighlight lang="python"> | ||
if __name__ == "__main__": | if __name__ == "__main__": | ||
</syntaxhighlight> | |||
==Data Structures== | |||
===Lists=== | |||
The default data structure in Python is lists.<br> | |||
A lot of functional programming can be done with lists<br> | |||
<syntaxhighlight lang="python"> | |||
groceries = ["apple", "orange"] | |||
groceries.reverse() | |||
# ["orange", "apple"] | |||
groceries_str = ",".join(groceries) | |||
# "apple,orange" | |||
groceries_str.split(",") | |||
# ["apple", "orange"] | |||
# Note that functions such as map, enumerate, range return enumerable items | |||
# which you can iterate over in a for loop | |||
# You can also convert these to lists by calling list() if necessary | |||
enumerate(groceries) | |||
# [(0, "apple"), (1, "orange")] | |||
</syntaxhighlight> | |||
===Dictionaries=== | |||
Dictionaries are hashmaps in Python | |||
<syntaxhighlight lang="python"> | |||
# Create a dictionary | |||
my_map = {} | |||
# Or | |||
my_map = {1: "a", 2: "b"} | |||
</syntaxhighlight> | </syntaxhighlight> | ||