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Python debugging tips [closed]
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PDB
You can use the pdb module, insert pdb.set_trace() anywhere and it will function as a breakpoint.
>>> import pdb
>>> a="a string"
>>> pdb.set_trace()
--Return--
> <stdin>(1)<module>()->None
(Pdb) p a
'a string'
(Pdb)
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Get path from open file in Python
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How to move all files including hidden files into parent directory via *
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You can find a comprehensive set of solutions on this in UNIX & Linux's answer to How do you move all files (including hidden) from one directory to another?. It shows solutions in Bash, zsh, ksh93, standard (POSIX) sh, etc.
You can use these two ...
IE9 border-radius and background gradient bleeding
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I found that setting background-size: 100% 103%; background-position:center; is better. 100% for both values adds some strange border at the top and bottom.
– Morten Christiansen
Jun 10 '11 at 11:46
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Convert list of dictionaries to a pandas DataFrame
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@CatsLoveJazz You can just do df = df.set_index('time') afterwards
– joris
Jun 28 '16 at 13:38
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How can you find out which process is listening on a port on Windows?
How can you find out which process is listening on a port on Windows?
31 Answers
31
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I need to securely store a username and password in Python, what are my options?
...vice is just a namespace for your app
service_id = 'IM_YOUR_APP!'
keyring.set_password(service_id, 'dustin', 'my secret password')
password = keyring.get_password(service_id, 'dustin') # retrieve password
Usage if you want to store the username on the keyring:
import keyring
MAGIC_USERNAME_KEY ...
What's the best practice to round a float to 2 decimals? [duplicate]
...was working with statistics in Java 2 years ago and I still got the codes of a function that allows you to round a number to the number of decimals that you want. Now you need two, but maybe you would like to try with 3 to compare results, and this function gives you this freedom.
/**
* Round to ...
MongoDB logging all queries
...st
> use myDb
switched to db myDb
> db.getProfilingLevel()
0
> db.setProfilingLevel(2)
{ "was" : 0, "slowms" : 1, "ok" : 1 }
> db.getProfilingLevel()
2
> db.system.profile.find().pretty()
Source: http://docs.mongodb.org/manual/reference/method/db.setProfilingLevel/
db.setProfilingL...
Concept behind these four lines of tricky C code
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The number 7709179928849219.0 has the following binary representation as a 64-bit double:
01000011 00111011 01100011 01110101 01010011 00101011 00101011 01000011
+^^^^^^^ ^^^^---- -------- -------- -------- -------- -------- --------
+ shows the position of th...