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How to pretty-print a numpy.array without scientific notation and with given precision?
...printoptions to set the precision of the output:
import numpy as np
x=np.random.random(10)
print(x)
# [ 0.07837821 0.48002108 0.41274116 0.82993414 0.77610352 0.1023732
# 0.51303098 0.4617183 0.33487207 0.71162095]
np.set_printoptions(precision=3)
print(x)
# [ 0.078 0.48 0.413 0.83 ...
Combine two or more columns in a dataframe into a new column with a new name
...g paste()? For above example, x column should have data as 2-aa, then 3-bb and 5-cc.
– Chetan Arvind Patil
Oct 6 '17 at 2:28
...
How to check if a line is blank using regex
...e character class.
* is zero-or-more repetition of.
In multiline mode, ^ and $ also match the beginning and end of the line.
References:
regular-expressions.info/Anchors, Character Classes, and Repetition.
A non-regex alternative:
You can also check if a given string line is "blank" (i.e. ...
Turn a string into a valid filename?
...ramework for how they create a "slug" from arbitrary text. A slug is URL- and filename- friendly.
The Django text utils define a function, slugify(), that's probably the gold standard for this kind of thing. Essentially, their code is the following.
def slugify(value):
"""
Normalizes str...
How do you reverse a string in place in C or C++?
...
The standard algorithm is to use pointers to the start / end, and walk them inward until they meet or cross in the middle. Swap as you go.
Reverse ASCII string, i.e. a 0-terminated array where every character fits in 1 char. (...
Quick Way to Implement Dictionary in C
...
why is here hashval = *s + 31 * hashval; exactly 31 and not anything else?
– アレックス
Sep 25 '14 at 8:50
14
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Split a string at uppercase letters
...d:
>>> import re
>>> re.findall('[A-Z][^A-Z]*', 'TheLongAndWindingRoad')
['The', 'Long', 'And', 'Winding', 'Road']
>>> re.findall('[A-Z][^A-Z]*', 'ABC')
['A', 'B', 'C']
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How do I find the duplicates in a list and create another list with them?
How can I find the duplicates in a Python list and create another list of the duplicates? The list only contains integers.
...
Get class list for element with jQuery
...me.split(/\s+/); to get you an array of class names.
Then you can iterate and find the one you want.
var classList = document.getElementById('divId').className.split(/\s+/);
for (var i = 0; i < classList.length; i++) {
if (classList[i] === 'someClass') {
//do something
}
}
jQu...
Split a string by spaces — preserving quoted substrings — in Python
... Wow, impressive. You posted at the exact same time as @Jerub. And 2 minutes after the question!
– xaviersjs
Jul 10 at 17:04
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