wikit | Wikibase Design System and home of WMDE-supported component | Data Manipulation library
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kandi X-RAY | wikit Summary
The Wikibase Design System and home of WMDE-supported component implementations.
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QUESTION
I have a list of data frames, e.g. from the following code:
...ANSWER
Answered 2021-May-28 at 01:20You can change all the column classes to characters and bind them together with map_df
.
QUESTION
ANSWER
Answered 2021-May-25 at 19:26The easiest way is to use pandas
directly:
QUESTION
I have been interested in studying R programming language recently and I came through this line of code which I am not understanding.
rugbyData <- rugbyHTMLData %>% html_nodes("table.wikitable") %>% .[[3]] %>% html_table
What does %>% means?
...ANSWER
Answered 2021-Apr-13 at 15:31In R, %>% is the pipe operator.
It enables you to chain operations in a data pipeline, as the output of every step becomes the input of the next step.
Without it the code would look like this:
QUESTION
I am trying to scrape city population numbers from the German language Wikipedia site.
With this code, I don't just get the number, but also the series info Name: Deutschlandkarte, dtype: object
. What am I missing?
Also, any other hints on how to do it more elegantly very much appreciated. My aim is to enter a list of city names to get their population numbers.
...ANSWER
Answered 2021-Mar-26 at 22:25You should add item()
to the population
line. The defined population
is a series and you desire only a single item from it. That is:
QUESTION
I am trying to scrape a Wikipedia table but every time I run this code the excel file doesn't separate the values as it should and just puts the row inside a cell when it should separate the Year,Winner, etc inside different columns each.
I tried to test it by running it directly with a list inside writerow() and the result was the same.
...ANSWER
Answered 2021-Mar-22 at 23:15Your output is fine when opening the csv file from Libre Office or Google spreadsheets.
I think the problem is with how excel imported this file. Check Excel settings for that, I'd look for the separator character first.
QUESTION
I'm scraping Wikipedia tables and I'm trying to get the population of some French cities from this website: https://fr.wikipedia.org/wiki/Liste_des_communes_du_Pas-de-Calais
For now, I don't want to use dataframes
and I want to select my item directly by using tags. But when I ask the program to print the values of the attribute "data-sort-value", it returns a list of None while in the HTML code of the website, the attribute is the population figure. Why?
Here is my code
...ANSWER
Answered 2021-Mar-21 at 03:24When you are doing nombre = ligne.find("td", "data-sort-value")
, you are looking for a tag data-sort-value
, however it's not a tag, it's an HTML attribute. If you want to search for a which has
data-sort-value
, you can use a CSS Selector td[data-sort-value]
.
To use a CSS Selector use select_one()
instead of find()
:
QUESTION
This is the function I'm trying to implement:
...ANSWER
Answered 2021-Mar-20 at 18:21By including [1].text
after row.findAll('td')
you are retrieving the text of the first item in the list that findAll
returns. Removing it should make it work. Also, replace('\n','')
can be replaced by strip()
:
QUESTION
I'm a beginner and this is my first question on the forum. As said in the title, my goal is to scrape the links from only one column of the table of that wiki page : https://fr.wikipedia.org/wiki/Liste_des_communes_de_l%27Ain
I've already watched several contributions asked on that forum (especially this one How do I extract text data in first column from Wikipedia table?) but none of them seem to answer my questions (and from what I understand, using a Dataframe is not a solution since it is a sort of copy/paste of the table while I want to get links).
Here is my code so far
...ANSWER
Answered 2021-Mar-17 at 15:02To scrape a specific column, you can use the nth-of-type(n)
CSS Selector. In order to use a CSS Selector, use the select()
method instead of find_all()
.
For example, to only scrape the sixth column, select the sixth using
soup.select("td:nth-of-type(6)")
Here's an example of how to print all the links from only the fifth column:
QUESTION
I'm trying to scrape from multiple Ballotpedia pages with Python and put this info into a csv, but am only getting the results for the last element of the list. Here is my code:
...ANSWER
Answered 2021-Mar-16 at 20:57there are three issues with the code
frame.to_csv
is outside the loop so only executed once with the last frame- even if it was inside it would override the same file
'18-TEST.csv'
with each iteration list
is a reserved keyword you should not use it as a variable name
try something like this
QUESTION
I am using Python to scrape the names of the Alaska Supreme Court justices from Ballotpedia (https://ballotpedia.org/Alaska_Supreme_Court). My current code is giving me both the names of the justices as well as the names of the persons in the "Appointed by" column. Here is my current code:
...ANSWER
Answered 2021-Mar-16 at 17:47Firstly, please note that this is code cannibalised from here.
Now, if you don't know how many rows or columns you have, this gives you a dataframe with all the columns, corresponding to the table on the webpage. Feel free to drop one of the columns if you don't need it.
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