Python Cookbook 2Nd Edition Jun 1002005 [Electronic resources] نسخه متنی

Chapter 4. Python Shortcuts

Introduction

Recipe 4.1.
Copying an Object

Recipe 4.2.
Constructing Lists with List Comprehensions

Recipe 4.3.
Returning an Element of a List If It Exists

Recipe 4.4.
Looping over Items and Their Indices in a Sequence

Recipe 4.5.
Creating Lists of Lists Without Sharing References

Recipe 4.6.
Flattening a Nested Sequence

Recipe 4.7.
Removing or Reordering Columnsin a List of Rows

Recipe 4.8.
Transposing Two-Dimensional Arrays

Recipe 4.9.
Getting a Value from a Dictionary

Recipe 4.10.
Adding an Entry to a Dictionary

Recipe 4.11.
Building a Dictionary Without Excessive Quoting

Recipe 4.12.
Building a Dict from a List of Alternating Keys and Values

Recipe 4.13.
Extracting a Subset of a Dictionary

Recipe 4.14.
Inverting a Dictionary

Recipe 4.15.
Associating Multiple Values with Each Key in a Dictionary

Recipe 4.16.
Using a Dictionary to Dispatch Methods or Functions

Recipe 4.17.
Finding Unions and Intersections of Dictionaries

Recipe 4.18.
Collecting a Bunch of Named Items

Recipe 4.19.
Assigning and Testing with One Statement

Recipe 4.20.
Using printf in Python

Recipe 4.21.
Randomly Picking Items with Given Probabilities

Recipe 4.22.
Handling Exceptions Within an Expression

Recipe 4.23.
Ensuring a Name Is Defined in a Given Module