turing4ever

import click


all_colors = 'black', 'red', 'green', 'yellow', 'blue', 'magenta', \
             'cyan', 'white', 'bright_black', 'bright_red', \
             'bright_green', 'bright_yellow', 'bright_blue', \
             'bright_magenta', 'bright_cyan', 'bright_white'


@click.command()

turing4ever

cat  new.txt | xargs -I{} sh -c 'printf {}; curl -s -o /dev/null -w " %{http_code}\n" {};' | grep -v 200

turing4ever

# if e is immutable
[e] * n
# [e] is mutable
list_of_list = [[e] for _ in range(n)]
# if you do [e] * n, you will get n references to the same [e]
foo = [[]] *4
foo[0].append('x')
[['x'], ['x'], ['x'], ['x']]

turing4ever

$ ipython profile create
$ vi ~/.ipython/profile_default/ipython_config.py
c.InteractiveShellApp.extensions = [] to c.InteractiveShellApp.extensions = ['autoreload']
c.InteractiveShellApp.exec_lines = [] to c.InteractiveShellApp.exec_lines = ['%load_ext autoreload', '%autoreload 2']

turing4ever

# Install mongodb
brew update
brew install mongodb
mkdir -p /data/db
sudo chown -R `id -un` /data/db

# Get a sample databaes
wget http://media.mongodb.org/zips.json
mongoimport -v --file=zips.json #loads into test.zips
# if you want to specify a database and collection

turing4ever

# Get rid of `UserWarning: The psycopg2 wheel package will be renamed from release 2.8; in order to keep installing from binary please use "pip install psycopg2-binary" instead. For details see: http://initd.org/psycopg/docs/install.html#binary-install-from-pypi.` 
pip uninstall psycopg2 -y
pip install --no-binary :all: psycopg2
# On Mac, you will most likely run into issue with '    ld: library not found for -lssl’. Then you will need to run `brew install openssl` and `export LIBRARY_PATH=/usr/local/Cellar/openssl/1.0.2o_1/lib`. Finally, run `pip install --no-binary :all: psycopg2`

turing4ever

        -- EU is identified by the country code list: https://dev.maxmind.com/geoip/legacy/codes/eu_country_list/
        (
            --"country code","country name"
            'EU', --"Europe"
            'AD', --"Andorra"
            'AL', --"Albania"
            'AT', --"Austria"
            'BA', --"Bosnia and Herzegovina"
            'BE', --"Belgium"
            'BG', --"Bulgaria"

turing4ever

def is_ascii(s):
    return all(ord(c) < 128 for c in s)

turing4ever

# Clone the repo, depth=1 means only last 1 commit
git clone --depth=1 git://urloftherepo
# Remove the .git directory recursively
( find . -type d -name ".git" && find . -name ".gitignore" && find . -name ".gitmodules" ) | xargs rm -rf

turing4ever

# A context manager to shut down stdout
# Within this context, sys.stdout will be written into devnull.
# so, effectively it's muted. 
@contextlib.contextmanager
def shut_stdout():
    sys.stdout = open(os.devnull, 'w')
    yield
    sys.stdout = sys.__stdout__