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How to retry after exception?
I have a loop starting with for i in range(0, 100) . Normally it runs correctly, but sometimes it fails due to network conditions. Currently I have it set so that on failure, it will continue in the except clause (continue on to the next number for i ).
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Creating an empty Pandas DataFrame, then filling it?
...
Here's a couple of suggestions:
Use date_range for the index:
import datetime
import pandas as pd
import numpy as np
todays_date = datetime.datetime.now().date()
index = pd.date_range(todays_date-datetime.timedelta(10), periods=10, freq='D')
columns = ['A','B', '...
Recursive sub folder search and return files in a list python
...er>"
RUNS = 20
def run_os_walk():
a = time.time_ns()
for i in range(RUNS):
fu = [os.path.join(dp, f) for dp, dn, filenames in os.walk(directory) for f in filenames if
os.path.splitext(f)[1].lower() == '.jpg']
print(f"os.walk\t\t\ttook {(time.time_ns() - a) ...
Programmatically creating Markdown tables in R with KnitR
... 1,4|
| 5,4| 3,9| 1,7|
UPDATED: if you get raw markdown in a document try setup results = "asis" chunk option.
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Python list iterator behavior and next(iterator)
...in addition to i being printed each iteration:
>>> a = iter(list(range(10)))
>>> for i in a:
... print(i)
... next(a)
...
0
1
2
3
4
5
6
7
8
9
So 0 is the output of print(i), 1 the return value from next(), echoed by the interactive interpreter, etc. There are just 5 itera...
How do you reindex an array in PHP?
...ou need it to start at one, then use the following:
$iOne = array_combine(range(1, count($arr)), array_values($arr));
Here are the manual pages for the functions used:
array_values()
array_combine()
range()
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Adding git branch on the Bash command prompt
...and substitution, and arithmetic expansion.
Rather than include the raw, unescaped branch name in PS1 when running in two- or
three-argument mode, construct PS1 to reference a variable that holds the branch name.
Because the shells do not recursively expand, this avoids arbitrary cod...
How to show SQL queries run in the Rails console?
... the job and not .to_sql. And .explain still does not provide sql query in raw format which I can run in pg console. But I needed the raw query to explain and analyze. I guess will have to do with explain for now.
– abhishek77in
Jun 5 at 8:20
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Generate colors between red and green for a power meter?
...d green values. Assuming your max red/green/blue value is 255, and n is in range 0 .. 100
R = (255 * n) / 100
G = (255 * (100 - n)) / 100
B = 0
(Amended for integer maths, tip of the hat to Ferrucio)
Another way to do would be to use a HSV colour model, and cycle the hue from 0 degrees (red) to...
Change string color with NSAttributedString?
...ring = [[NSMutableAttributedString alloc]initWithString:self.text.text];
NSRange range=[self.myLabel.text rangeOfString:texts[sliderValue]]; //myLabel is the outlet from where you will get the text, it can be same or different
NSArray *colors=@[[UIColor redColor],
[UIColor redColo...