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Is there a wikipedia API just for retrieve content summary?
...d's popular programming blog.\nIt features questions and answers on a wide range of topics in computer programming. The website serves as a platform for users to ask and answer questions, and, through membership and active participation, to vote questions and answers up or down and edit questions an...
A weighted version of random.choice
...
Arrange the weights into a
cumulative distribution.
Use random.random() to pick a random
float 0.0 <= x < total.
Search the
distribution using bisect.bisect as
shown in the example at http://docs.python.org/dev/library/b...
Are lists thread-safe?
...rs will get the error quickly
count = 1000
l = []
def add():
for i in range(count):
l.append(i)
time.sleep(0.0001)
def remove():
for i in range(count):
l.remove(i)
time.sleep(0.0001)
t1 = threading.Thread(target=add)
t2 = threading.Thread(target=remove)
t1...
Getting number of elements in an iterator in Python
...No. It's not possible.
Example:
import random
def gen(n):
for i in xrange(n):
if random.randint(0, 1) == 0:
yield i
iterator = gen(10)
Length of iterator is unknown until you iterate through it.
...
How to take column-slices of dataframe in pandas
...
Careful that ranges in pandas include both end points, ie >>>data.ix[:, 'a':'c'] a b c 0 0.859192 0.881433 0.843624 1 0.744979 0.427986 0.177159
– grasshopper
...
What is the difference between UTF-8 and Unicode?
...the dominant language in computing at the time, i.e. English, into numbers ranging from 0 to 127 (7 bits). With 26 letters in the alphabet, both in capital and non-capital form, numbers and punctuation signs, that worked pretty well. ASCII got extended by an 8th bit for other, non-English languages,...
Cannot instantiate the type List [duplicate]
...
Raw collection types are dangerous and should not be used or suggested for use in any new code targeted for Java 5+, end of story.
– Matt Ball
Oct 31 '11 at 22:15
...
plot a circle with pyplot
...es), and since the limits have never been set, they defaults to an x and y range from 0 to 1.
Here's a continuation of the example, showing how units matter:
circle1 = plt.Circle((0, 0), 2, color='r')
# now make a circle with no fill, which is good for hi-lighting key results
circle2 = plt.Circle(...
Does Python have an ordered set?
...; from boltons.setutils import IndexedSet
>>> x = IndexedSet(list(range(4)) + list(range(8)))
>>> x
IndexedSet([0, 1, 2, 3, 4, 5, 6, 7])
>>> x - set(range(2))
IndexedSet([2, 3, 4, 5, 6, 7])
>>> x[-1]
7
>>> fcr = IndexedSet('freecreditreport.com')
>>...
Limit ggplot2 axes without removing data (outside limits): zoom
...points, but you might want to plot lines that intersect with the specified range, but ggplot's range or xlim/ylim methods removes these. Is there another way to specify the plot axis range without removing outlying data?
...