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Showing posts with the label Iterator

Iterating A Pandas Dataframe Over 'n' Next Rows

I have this Pandas dataframe df: station a_d direction a 0 0 a 0 0 a … Read more Iterating A Pandas Dataframe Over 'n' Next Rows

How Can I Traverse A File System With A Generator?

I'm trying to create a utility class for traversing all the files in a directory, including tho… Read more How Can I Traverse A File System With A Generator?

Python Filter / Max Combo - Checking For Empty Iterator

(Using Python 3.1) I know this question has been asked many times for the general question of testi… Read more Python Filter / Max Combo - Checking For Empty Iterator

How To Get An Arbitrary Element From A Frozenset?

I would like to get an element from a frozenset (without modifying it, of course, as frozensets are… Read more How To Get An Arbitrary Element From A Frozenset?

Why Does A Python Iterator Need A Dunder Iter Function?

According to the documentation, a container that needs to be iterable should supply an __iter__() f… Read more Why Does A Python Iterator Need A Dunder Iter Function?

Get Length Of A (non Infinite) Iterator Inside It's Loop Using Python 2.7

I'm working with some iterator generated using itertools.imap, and I was thinking if there is a… Read more Get Length Of A (non Infinite) Iterator Inside It's Loop Using Python 2.7

Why Does A Python Iterator Need An Iter Method That Simply Returns Self?

I understand that the standard says that it does but I am trying to find the underlying reason for … Read more Why Does A Python Iterator Need An Iter Method That Simply Returns Self?

Python Iterator Returning Unwanted 'none'

Why is my iterator returning extra 'None' in the output. For the parameters/example below,… Read more Python Iterator Returning Unwanted 'none'

Re-using Zip Iterator In Python 3

I have the zip object: L_RANGES = zip(range(10, 20), range(11, 21)) First call of L_RANGES is ok: … Read more Re-using Zip Iterator In Python 3

Why Do Tuples In Python Work With Reversed But Do Not Have __reversed__?

In discussion of this answer we realized that tuples do not have a __reversed__ method. My guess wa… Read more Why Do Tuples In Python Work With Reversed But Do Not Have __reversed__?

Iterator Example From Dive Into Python 3

I'm learning Python as my 1st language from http://www.diveintopython3.net/. On Chp 7, http://w… Read more Iterator Example From Dive Into Python 3

Creating 2d Coordinates Map In Python

I'm not looking for solution, I'm looking for a better solution or just a different way to … Read more Creating 2d Coordinates Map In Python

How To Create An Iterator Pipeline In Python?

Is there a library or recommended way for creating an iterator pipeline in Python? For example: &g… Read more How To Create An Iterator Pipeline In Python?

Why Does Python's Itertools.cycle Need To Create A Copy Of The Iterable?

The documentation for Python's itertools.cycle() gives a pseudo-code implementation as: def cyc… Read more Why Does Python's Itertools.cycle Need To Create A Copy Of The Iterable?

Implementing Pandas Function To Numpy Functions

Is there a way I could convert the xy_mean function to be computed using the pandas library just li… Read more Implementing Pandas Function To Numpy Functions

Porting Invregex.py To Javascript (node.js)

I have been trying to port invRegex.py to a node.js implementation for a while, but I'm still s… Read more Porting Invregex.py To Javascript (node.js)

Get Length Of A (non Infinite) Iterator Inside It's Loop Using Python 2.7

I'm working with some iterator generated using itertools.imap, and I was thinking if there is a… Read more Get Length Of A (non Infinite) Iterator Inside It's Loop Using Python 2.7

Python Filter / Max Combo - Checking For Empty Iterator

(Using Python 3.1) I know this question has been asked many times for the general question of testi… Read more Python Filter / Max Combo - Checking For Empty Iterator

Number Of Lines In Csv.DictReader

I have a csv DictReader object (using Python 3.1), but I would like to know the number of lines/row… Read more Number Of Lines In Csv.DictReader

Mergesort-style Iteration Over Two Iterators In Python

Is there an elegant way in Python to iterate over two iterators in the way that the mergesort algor… Read more Mergesort-style Iteration Over Two Iterators In Python