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item_ids, data[ITEM_IDX_KEY] = np.unique(data[item_id_col], return_inverse=True)

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Links

https://slackmojis.com/

Pick Ups

https://media.giphy.com/media/aVQpXfK9yJKnu/200w_d.gif

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# final edit for xonsh 0.8.12
# Author: Qiushi Pan (@qqhann)

def _git_prefix():
     import xonsh.tools as xt

     prefix = $(git rev-parse --show-prefix).strip()
     sep = xt.get_sep()

     if len(prefix) == 0:

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import uuid, os, base64

def uuid32():
    return base64.b32encode(uuid.uuid4().bytes).decode('ASCII').rstrip('=')


def get_filefield_ascii_uuid(instance, filename):
    # file will be uploaded to MEDIA_ROOT/user_<id>/<filename>
    prefix = 'image'
    name = uuid32()

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# https://matplotlib.org/faq/howto_faq.html#matplotlib-in-a-web-application-server
# do this before importing pylab or pyplot
import matplotlib
matplotlib.use('Agg')
import matplotlib.pyplot as plt

fig = plt.figure()
ax = fig.add_subplot(111)
ax.plot([1,2,3])
fig.savefig('test.png')

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# Ubuntu
# ====================

# dpkg
# https://askubuntu.com/a/350
dpkg -x package.deb dir

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# the upstream component nginx needs to connect to
upstream django {
    server unix:///home/user/api/master.sock; # for a file socket
}

# configuration of the server
server {
    # the port your site will be served on
    listen      80;
    # the domain name it will serve for

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import os
from pathlib import Path
from dotenv import load_dotenv

env_path = Path('.') / '.env'
load_dotenv(dotenv_path=env_path)

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Go Uppercase in current word

gUiw

~ will reverse the case of the selected characters it takes a count e.g. 5~ will reverse the case of 5 characters. g~w to change case of a whole word.

~

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# Thanks: https://github.com/ghmagazine/awesomebook

# Filter
df.query('"2016-10-13" <= checkout_date <= "2016-10-14"')

# Sampling
df.sample(frac=0.5)  # Random sample 50%
df.sample(n=100)  # Specify by N

# 集約ID単位のサンプリング