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I need to securely store a username and password in Python, what are my options?
...em Functions ###
def getSaltForKey(key):
return PBKDF2(key, saltSeed).read(SALT_SIZE) # Salt is generated as the hash of the key with it's own salt acting like a seed value
def encrypt(plaintext, salt):
''' Pad plaintext, then encrypt it with a new, randomly initialised cipher. Will not pr...
How to pipe input to a Bash while loop and preserve variables after loop ends
...
The correct notation for Process Substitution is:
while read i; do echo $i; done < <(echo "$FILECONTENT")
The last value of i assigned in the loop is then available when the loop terminates.
An alternative is:
echo $FILECONTENT |
{
while read i; do echo $i; done
...do othe...
Why should I avoid using Properties in C#?
... particular point - I find properties make the client code much simpler to read than the equivalent method calls. I agree that developers need to know that properties are basically methods in disguise - but I think that educating developers about that is better than making code harder to read using ...
C# Stream流使用总结 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...说FileStream、MemoryStream、 BufferedStream、 NetWorkStream、 StreamReader StreamWriter、 TextReader TextWriter等的简单用法。一、FileStream类
FileStream类主要用于读取磁盘上的文件或者向磁盘文件写入信息。有时，我们需要将程序中的一些数据存储...
C fopen vs open
...tion.
That leaves the buffering question. In places where you are mainly reading or writing a file sequentially, the buffering support is really helpful and a big speed improvement. But it can lead to some interesting problems in which data does not end up in the file when you expect it to be the...
How does BitLocker affect performance? [closed]
...ton V100 64gb SSD the results are
Bitlocker off → on
Sequential read 243 MB/s → 140 MB/s
Sequential write 74.5 MB/s → 51 MB/s
Random read 176 MB/s → 100 MB/s
Random write, and the 4KB speeds are almost identical.
Clearly the processor is the bottleneck in this case....
Is there a way to auto-adjust Excel column widths with pandas.ExcelWriter?
...ps someone :)
import pandas as pd
import sqlalchemy as sa
import urllib
read_server = 'serverName'
read_database = 'databaseName'
read_params = urllib.quote_plus("DRIVER={SQL Server};SERVER="+read_server+";DATABASE="+read_database+";TRUSTED_CONNECTION=Yes")
read_engine = sa.create_engine("mssql+...
How do I pass a string into subprocess.Popen (using the stdin argument)?
...).stdin
Warning Use communicate() rather than
stdin.write(), stdout.read() or
stderr.read() to avoid deadlocks due
to any of the other OS pipe buffers
filling up and blocking the child
process.
So your example could be written as follows:
from subprocess import Popen, PIPE, STDOUT
...
Python concatenate text files
...te these files into a new file. I could open each file by f = open(...) , read line by line by calling f.readline() , and write each line into that new file. It doesn't seem very "elegant" to me, especially the part where I have to read//write line by line.
...
How can I randomize the lines in a file using standard tools on Red Hat Linux?
...s ruby example which has the benefit of being shorter: ruby -e 'puts STDIN.readlines.shuffle'. It would need testing on big inputs to see if the speed is comparable. (also works on OS X)
– mivk
May 17 '15 at 21:48
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