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Unique (non-repeating) random numbers in O(1)?
...roposed standard method to achieve this. I've experimented with some basic Python code which is based on the AES-FFX idea, although not fully conformant--see Python code here. It can e.g. encrypt a counter to a random-looking 7-digit decimal number, or a 16-bit number. Here is an example of radix 10...
How to see full symlink path
...t have either of the above installed, you can do the following if you have python 2.6 (or later) installed
python -c 'import os.path; print(os.path.realpath("symlinkName"))'
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Remove unwanted parts from strings in a column
...
@LucaGuarro from the python docs: "The r prefix, making the literal a raw string literal, is needed in this example because escape sequences in a normal “cooked” string literal that are not recognized by Python, as opposed to regular expressi...
Installing Latest version of git in ubuntu
...nd, install it first with
sudo apt-get install software-properties-common python-software-properties
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How are feature_importances in RandomForestClassifier determined?
...ass:
https://github.com/pjh2011/rf_perm_feat_import
Edit: This works for Python 2.7, not 3
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How to write to an existing excel file without overwriting data (using pandas)?
...'engine')
writer = pd.ExcelWriter(filename, engine='openpyxl')
# Python 2.x: define [FileNotFoundError] exception if it doesn't exist
try:
FileNotFoundError
except NameError:
FileNotFoundError = IOError
try:
# try to open an existing workbook
...
How to check if command line tools is installed
...d CLT for installing packages as below.
Installing sphinx-doc dependency: python
Warning: Building python from source:
The bottle needs the Apple Command Line Tools to be installed.
You can install them, if desired, with:
xcode-select --install
...
Facebook Architecture [closed]
...itten in a variety of different programming languages including C++, Java, Python, and Erlang and they are used according to requirement. With LAMP Facebook uses some technologies ,to support large number of requests, like
Memcache - It is a memory caching system that is used to speed up dynamic d...
What is the best practice for dealing with passwords in git repositories?
... value of an environment variable using:
echo "$your_env_variable"
With Python, you can get value of an environment variable using:
import os
print(os.environ['your_env_variable'])
PS: be aware that it's probably a bit risky (but it's a quite common practice) https://www.bleepingcomputer.com/n...
How do I get the different parts of a Flask request's url?
...
If you are using Python, I would suggest by exploring the request object:
dir(request)
Since the object support the method dict:
request.__dict__
It can be printed or saved. I use it to log 404 codes in Flask:
@app.errorhandler(404)
def ...