ammaaim

from flask import request

@app.route('/data')
def data():
    # here we want to get the value of user (i.e. ?user=some-value)
    user = request.args.get('user')

ammaaim

# $ pip install pyserial

import serial
ser = serial.Serial('/dev/tty.usbmodem1411')  # open serial port

while True:
	x = ser.read()
	print(int(ord(x))) # print received byte as int value

ammaaim

>>> INSTALL
pip3.4 install weasyprint

>>> EXAMPLE
from weasyprint import HTML, CSS

html_src='''
    <h1>The title</h1>
    <p>Content goes here

ammaaim

sudo easy_install pip

ammaaim

The argument mode points to a string beginning with one of the following
 sequences (Additional characters may follow these sequences.):

 ``r''   Open text file for reading.  The stream is positioned at the
         beginning of the file.

 ``r+''  Open for reading and writing.  The stream is positioned at the
         beginning of the file.

 ``w''   Truncate file to zero length or create text file for writing.

ammaaim

require 'yaml'

$db_file = 'filename.yaml'

def load_data
  text = File.read 'db.yaml'
  return YAML.load text
end

def store_data hash

ammaaim

directory_name = "name"
Dir.mkdir(directory_name) unless File.exists?(directory_name)

ammaaim

-- FOR MySQL -disable safemode
SET SQL_SAFE_UPDATES = 0;
-- for example remove all older than '2014-10-01'
DELETE FROM `base-name`.`table-name` WHERE `table-name`.`date-field` < '2014-10-01';

ammaaim

require 'csv'    

csv_text = File.read('filename.csv')
csv = CSV.parse(csv_text, :headers => true)
csv.each do |row|
  Model.create!(row.to_hash)
end

ammaaim

# in excel: file->import->CSV file

require 'csv'

# write csv
CSV.open("file.csv", "wb") do |csv|
  csv << ["row", "of", "CSV", "data"]
  csv << ["another", "row"]
  # ...
end