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How do I remove the first characters of a specific column in a table?
...mn in a table? Column name is Student Code and an example value is ABCD123Stu1231 .
I want to remove first 4 chars from my table for all records
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How do I resize an image using PIL and maintain its aspect ratio?
...humbnail.
Below is an (edited) example from the PIL documentation.
import os, sys
import Image
size = 128, 128
for infile in sys.argv[1:]:
outfile = os.path.splitext(infile)[0] + ".thumbnail"
if infile != outfile:
try:
im = Image.open(infile)
im.thumbnail(s...
Convert String to SecureString
...
"The combination is 12345... that's the kind of thing an idiot has on his luggage!"
– Kolob Canyon
Sep 27 '17 at 23:47
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Only get hash value using md5sum (without filename)
...he - indicates the source as stdin). – You must tell bash to capture those words into a string, using Command Substitution: $( command ). – The ( brackets ) produce a bash array with 2 elements. However, you must assign that array construct ( … ) to an variable name; hence, using md5 as the...
How to determine the Boost version on a system?
Is there a quick way to determine the version of the Boost C++ libraries on a system?
11 Answers
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Set Focus on EditText
... necessary or i can just show it immediately?
– Coder123
Mar 6 '19 at 8:15
add a comment
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Reload Flask app when template file changes
...ment to Flask().run(), a collection of filenames to watch: any change on those files will trigger the reloader.
Example:
from os import path, walk
extra_dirs = ['directory/to/watch',]
extra_files = extra_dirs[:]
for extra_dir in extra_dirs:
for dirname, dirs, files in walk(extra_dir):
...
How to randomly select an item from a list?
...y selects a single item
For reproducibility, you can do:
np.random.seed(123)
np.random.choice(foo) # first call will always return 'c'
For samples of one or more items, returned as an array, pass the size argument:
np.random.choice(foo, 5) # sample with replacement (default)
np.random...
Using an SSH keyfile with Fabric
How do you configure fabric to connect to remote hosts using SSH keyfiles (for example, Amazon EC2 instances)?
8 Answers
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How do I format a number in Java?
...
From this thread, there are different ways to do this:
double r = 5.1234;
System.out.println(r); // r is 5.1234
int decimalPlaces = 2;
BigDecimal bd = new BigDecimal(r);
// setScale is immutable
bd = bd.setScale(decimalPlaces, BigDecimal.ROUND_HALF_UP);
r = bd.doubleValue();
System.out.pri...