marnixkoops

import pandas as pd
import numpy as np

from custom_code import timefold
from sklearn import preprocessing


def target_encoder(df, column, target, index=None, method='mean'):
    """
    Target-based encoding is numerization of a categorical variables via the target variable. Main purpose is to deal

Den1al

def explode(df, by_column, new_col_name):
    rows = []

    for row in df.itertuples():
        for value in getattr(row, by_column):
            rows.append({
                new_col_name: value,
                **{
                    key: getattr(row, key)
                    for key in row._fields

jart

#!/bin/bash
# lolc.sh - run c code in bash
# by justine tunney <[email protected]>
# licensed mit or apache 2.0

runc() {
  local bin=$(mktemp -u)
  gcc -xc -o ${bin} /dev/stdin || return
  chmod u+x ${bin}
  ${bin} "$@"

tartakynov

import numpy as np
import pylab as pl
from numpy import fft
    
def fourierExtrapolation(x, n_predict):
    n = x.size
    n_harm = 10                     # number of harmonics in model
    t = np.arange(0, n)
    p = np.polyfit(t, x, 1)         # find linear trend in x
    x_notrend = x - p[0] * t        # detrended x

Kartones

PSQL

Magic words:

psql -U postgres

Some interesting flags (to see all, use -h or --help depending on your psql version):

• -E: will describe the underlaying queries of the \ commands (cool for learning!)
• -l: psql will list all databases and then exit (useful if the user you connect with doesn't has a default database, like at AWS RDS)

django-1.4.1-with-hints

diff --git a/db/models/query.py b/db/models/query.py
index 44acadf..a241fbd 100644
--- a/db/models/query.py
+++ b/db/models/query.py
@@ -90,7 +90,7 @@ class QuerySet(object):
         return len(self._result_cache)
 
     def __iter__(self):
-        if self._prefetch_related_lookups and not self._prefetch_done:
+        if hasattr(self, "_prefetch_related_lookups") and self._prefetch_related_lookups and not self._prefetch_done:

richieforeman

# Run this once
openssl genrsa -des3 -out ca.key 4096
openssl req -new -x509 -days 365 -key ca.key -out ca.crt