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🐍 Python Tricks 💌

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🐍 Python Tricks 💌

Get a short & sweet Python Trick delivered to your inbox every couple of days. No spam ever. Unsubscribe any time. Curated by the Real Python team.

Python Tricks Dictionary Merge
Python Tricks

Q: What’s a Python Trick?

A short Python code snippet meant as a teaching tool. A Python Trick either teaches an aspect of Python with a simple illustration, or serves as a motivating example to dig deeper and develop an intuitive understanding.

Here are a few examples of the kinds of tricks you’ll receive:

Python
# 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}
Python
# Why Python Is Great:# Function argument unpackingdefmyfunc(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
Python
# The lambda keyword in Python provides a# shortcut for declaring small and# anonymous functions:>>>add=lambdax,y:x+y>>>add(5,3)8# You could declare the same add()# function with the def keyword:>>>defadd(x,y):...returnx+y>>>add(5,3)8# So what's the big fuss about?# Lambdas are *function expressions*:>>>(lambdax,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.

Improve Your Python Skills, Bit by Bit:

🐍 Python Tricks 💌

Get a short & sweet Python Trick delivered to your inbox every couple of days. No spam ever. Unsubscribe any time. Curated by the Real Python team.

Python Tricks Dictionary Merge

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“Python Tricks” curated by Dan Bader and the Real Python team.