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How to print an exception in Python?
...eback.print_exc()
Output:
Traceback (most recent call last):
File "C:\scripts\divide_by_zero.py", line 4, in <module>
1/0
ZeroDivisionError: division by zero
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React JSX: selecting “selected” on selected option
...tState({value: event.target.value});
handleSubmit = (event) => {
alert('Your favorite flavor is: ' + this.state.value);
event.preventDefault();
}
render() {
return (
<form onSubmit={this.handleSubmit}>
<label>
Pick your favorite flavor:
...
Convert SQLITE SQL dump file to POSTGRESQL
...it appears it worked quite well. I know if I had tried to run one of these scripts or do the stepwise conversion mentioned herein, I would have spent much more time.
To prove the concept I dumped this testdb and imported into a development environment on a production server and the data transferred ...
Real differences between “java -server” and “java -client”?
...This is useful if you have users who or modules which set JAVA_OPTS or use scripts which change command line options. This will also let you monitor, in real time, heap and permgen space usage along with lots of other stats.
...
In-place type conversion of a NumPy array
...n a simple x.astype(float) conversion. I wouldn't recommend it unless your script is bordering on MemoryError.
– hpaulj
Feb 20 '19 at 5:04
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Python: What OS am I running on?
...her one. But if you don't use "sys" yet, using "_platform" might be more descriptive and less likely to collide with another meaning.
– sanderd17
Dec 21 '16 at 9:01
add a comm...
Get last result in interactive Python shell
... It only works in the interactive shell, though. Don't rely on it for scripts.
– John Fouhy
Oct 14 '08 at 4:54
7
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How to stop a PowerShell script on the first error?
I want my PowerShell script to stop when any of the commands I run fail (like set -e in bash). I'm using both Powershell commands ( New-Object System.Net.WebClient ) and programs ( .\setup.exe ).
...
Measuring elapsed time with the Time module
... that want better formatting,
import time
start_time = time.time()
# your script
elapsed_time = time.time() - start_time
time.strftime("%H:%M:%S", time.gmtime(elapsed_time))
will print out, for 2 seconds:
'00:00:02'
and for 7 minutes one second:
'00:07:01'
note that the minimum time unit wi...
Scale image to fit a bounding box
...es and ratios you're dealing with. The only way to detect that is with JavaScript.
Although you're not looking for a JS solution I'll add one anyway if someone might need it. The easiest way to handle this with JavaScript is to add a class based on the difference in ratio. If the width-to-height ...