notebook.community

Edit and run

Title: Generator Expressions
Slug: generator_expressions
Summary: Generator Expressions in Python.
Date: 2016-01-23 12:00
Category: Python
Tags: Basics
Authors: Chris Albon

Interesting in learning more? Check out Fluent Python



In [1]:

    
# Create a list of students
students = ['Abe', 'Bob', 'Christina', 'Derek', 'Eleanor']



In [2]:

    
# Create a generator expression that yields lower-case versions of the student's names
lowercase_names = (student.lower() for student in students)



In [3]:

    
# View the generator object
lowercase_names









    Out[3]:





<generator object <genexpr> at 0x104837518>



In [4]:

    
# Get the next name lower-cased
next(lowercase_names)









    Out[4]:





'abe'



In [5]:

    
# Get the next name lower-cased
next(lowercase_names)









    Out[5]:





'bob'



In [6]:

    
# Get the remaining names lower-cased
list(lowercase_names)









    Out[6]:





['christina', 'derek', 'eleanor']