Install Java 8
sudo yum install java-1.8.0
Remove
sudo yum remove java-1.7.0-openjdk
Get ES
wget https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-6.2.4.rpm
Use the root user
sudo su
Install ES
sudo rpm --install elasticsearch-6.2.4.rpm
Run ES on system startup
sudo chkconfig --add elasticsearch
Go inside the elasticsearch...
Sunday, September 8, 2019
Tuesday, August 6, 2019
Working With Date Time - In Depth

A date in Python is not a data type of its own, but we can import a module named datetime to work with dates as date objects.
Example
import datetime
x = datetime.datetime.today()
x #> datetime.datetime(2019, 8, 6, 22, 39, 30, 864393)
The output is in the following order: ‘year’, ‘month’, ‘date’,...
Sunday, August 4, 2019
Get list from pandas DataFrame column headers

The groupby function can be used to concatenate data from multiple rows into one field.
Create a Dataframe
import pandas as pd
import numpy as np
#Create a Dictionary of series
d = {'Name': pd.Series(['Alisa','Bobby','Cathrine','Madonna','Rocky','Sebastian','Jaqluine',
'Rahul','David','Andrew','Ajay','Teresa']),
...
Thursday, August 1, 2019
Concatenating Rows in Python Pandas

The groupby function can be used to concatenate data from multiple rows into one field.
Create a Dataframe
import pandas as pd
import numpy as np
#Create a Dictionary of series
d = {'Name': pd.Series(['Alisa','Bobby','Cathrine','Madonna','Rocky','Sebastian','Jaqluine',
'Rahul','David','Andrew','Ajay','Teresa']),
...
Python
Data Wrangling
Concatenating Rows in Python Pandas
Get list from pandas DataFrame column headers
How to split a list inside a Dataframe cell into rows in Pandas
Data Manipulation
Working with Date Time - In Depth
Tea
Milk
...
Monday, July 22, 2019
How to split a list inside a Dataframe cell into rows in Pandas
temp = {'name' : ['Edmond', 'ALex'], 'cat' : [['Horror', 'Vengeance', 'Justice'], ['Romance', 'Sacrifice']]}
df = pd.DataFrame(temp)
df.cat.apply(pd.Series)
df.cat.apply(pd.Series) \
.merge(df, left_index = True, right_index = True)
df.cat.apply(pd.Series) \
.merge(df, left_index = True, right_index = True) \
.drop(['cat'], axis = 1)
df.cat.apply(pd.Series)...
Amount to Words Convert via PostgreSQL
asd
CREATE OR REPLACE FUNCTION dateToWords(the_date TIMESTAMP) RETURNS text AS $$
DECLARE
_month INTEGER;
_day INTEGER;
_year INTEGER;
_hour INTEGER;
_minute INTEGER;
_year_text TEXT;
_hour_text TEXT;
_day_text TEXT;
_minute_text TEXT;
_exact_time TEXT;
_month_text TEXT;
e TEXT;
BEGIN
_month = EXTRACT(MONTH FROM the_date);
_day = EXTRACT(DAY FROM the_date);
_year = EXTRACT(YEAR FROM the_date);
_hour...
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