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Lazy Method for Reading Big File in Python?
...ne by line was not an option, but I still needed to process it row by row.
Converting'|' to '\n' before processing was also out of the question, because some of the fields of this csv contained '\n' (free text user input).
Using the csv library was also ruled out because the fact that, at least in e...
How to use the 'sweep' function
...,sd))
df_T=sweep(sweep(df,2,df_means,"-"),2,df_sds,"/")*10+50
This code convert raw scores to T scores (with mean=50 and sd=10):
> df
[,1] [,2] [,3] [,4] [,5]
[1,] 109 8 89 69 15
[2,] 85 13 25 150 26
[3,] 30 79 48 1 125
[4,] 56 74 23 140 100
[5,] 136...
Delaying AngularJS route change until model loaded to prevent flicker
...
Could someone help me convert this answer to the app.controller('MyCtrl') format? jsfiddle.net/5usya/1 didn't work for me.
– user1071182
Apr 15 '13 at 3:03
...
How does Dijkstra's Algorithm and A-Star compare?
...th
raise ValueError('No Path Found')
def next_move(pacman,food,grid):
#Convert all the points to instances of Node
for x in xrange(len(grid)):
for y in xrange(len(grid[x])):
grid[x][y] = Node(grid[x][y],(x,y))
#Get the path
path = aStar(grid[pacman[0]][pacman[1]],grid[food[0]][food[1...
add a string prefix to each value in a string column using Pandas
...
If you load you table file with dtype=str
or convert column type to string df['a'] = df['a'].astype(str)
then you can use such approach:
df['a']= 'col' + df['a'].str[:]
This approach allows prepend, append, and subset string of df.
Works on Pandas v0.23.4, v0.24.1. ...
Path of assets in CSS files in Symfony 2
...css, b.css, c.css, etc: all identical, just changing the color and the CSS selector.
.a
{
background: red url('../images/devil.png');
}
The "directories" structure is:
Directories
All this came, because I did not want the individual original files exposed to the public, specially if I want...
Alter MySQL table to add comments on columns
...
Script for all fields on database:
SELECT
table_name,
column_name,
CONCAT('ALTER TABLE `',
TABLE_SCHEMA,
'`.`',
table_name,
'` CHANGE `',
column_name,
'` `',
column_name,
'` ',
column_typ...
error: Unable to find vcvarsall.bat
...
You can also wheel convert ....exe these installers and then install them with pip whenever you like.
– Zooba
Sep 29 '14 at 22:27
...
Python progression path - From apprentice to guru
...nd challenging. An URL shortener? Sure, I can do that. Oh, I learnt how to convert numbers from one base to another as a side effect!
This is valid whatever your skill level. You never stop learning. By actively coding in your spare time you will, with little additional effort, come to understand t...
Are Javascript arrays sparse?
...ly large integers but also strings, floats, or other objects. All keys get converted to strings via toString() before being added to the hash. You can confirm this with some test code:
<script>
var array = [];
array[0] = "zero";
array[new Date().getTime()] = "now";
array[3.14] = "pi";...