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# How to merge two dictionaries
# in Python 3.5+:
>>> x = {'a': 1, 'b': 2}
>>> y = {'b': 3, 'c': 4}
>>> z = {**x, **y}
>>> z
{'c': 4, 'a': 1, 'b': 3}
# In Python 2.x you could use this:
>>> z = dict(x, **y)
>>> z
{'a': 1, 'c': 4, 'b': 3}
# Why Python Is Great:
# Function argument unpacking
def myfunc(x, y, z):
print(x, y, z)
tuple_vec = (1, 0, 1)
dict_vec = {'x': 1, 'y': 0, 'z': 1}
>>> myfunc(*tuple_vec)
1, 0, 1
>>> myfunc(**dict_vec)
1, 0, 1
# The lambda keyword in Python provides a
# shortcut for declaring small and
# anonymous functions:
>>> add = lambda x, y: x + y
>>> add(5, 3)
8
# You could declare the same add()
# function with the def keyword:
>>> def add(x, y):
... return x + y
>>> add(5, 3)
8
# So what's the big fuss about?
# Lambdas are *function expressions*:
>>> (lambda x, y: x + y)(5, 3)
8
# → Lambda functions are single-expression
# functions that are not necessarily bound
# to a name (they can be anonymous).
# → Lambda functions can't use regular
# Python statements and always include an
# implicit `return` statement.
The PyTricks newsletter by @realpython is a fantastic example of how newsletter should look like. Short, clear and straight to the point!
love the work you've done, are doing, and continue to do!
These are so good. The "dicts to emulate switch/case statements" was 🔥😎🔥. https://t.co/U2J7IOPmJN
Dare I say, that looks Pythonic to me. https://t.co/qEajq6GNl8
Recommended! https://t.co/Mc0dX7gJjn
The regular emails from @realpython are a real treat and highly recommended for anyone interested in Python.