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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
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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. ...
multiprocessing: sharing a large read-only object between processes?
...rom many sources.
Reading from many named pipes is often done using the select module to see which pipes have pending input.
Solution 3
Shared lookup is the definition of a database.
Solution 3A – load a database. Let the workers process the data in the database.
Solution 3B – create...
Replace selector images programmatically
I have an ImageView that has a drawable image resource set to a selector. How do I programmatically access the selector and change the images of the highlighted and non-highlighted state?
...
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
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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";...
django urls without a trailing slash do not redirect
...MiddlewareAppendSlashWithoutRedirect(CommonMiddleware):
""" This class converts HttpSmartRedirectResponse to the common response
of Django view, without redirect.
"""
response_redirect_class = HttpSmartRedirectResponse
def __init__(self, *args, **kwargs):
# create dj...
Difference between '..' (double-dot) and '…' (triple-dot) in range generation?
...ven if a & b are integers, the ranges are different. Only when each is converted to an array are they the same. A specific counterexample exists in the accepted answer.
– Andrew Marshall
Jul 10 '15 at 12:36
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How to create SBT project with IntelliJ Idea?
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I'm a total convert to this plugin. Use it in combination with the idea-sbt-plugin, which lets you delegate your project build to SBT, and use SBT interactively from a tool window in IDEA. Version 0.2.0-SNAPSHOT of sbt-idea fixes a few l...