Soyoung Park parksoy

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Reading & Writing GZIP Files in Python

I have been testing various ways to read and write text files with GZIP in Python. There were a lot of uninteresting results, but there were two I thought were worth sharing.

Writing GZIP files

If you have a big list of strings to write to a file, you might be tempted to do:

f = gzip.open(out_path, 'wb')

for line in lines:

	from collections import namedtuple
	def convert(dictionary):
	return namedtuple('GenericDict', dictionary.keys())(**dictionary)

	"""
	>>> d = dictionary(a=1, b='b', c=[3])
	>>> named = convert(d)
	>>> named.a == d.a
	True
	>>> named.b == d.b

	#https://stackoverflow.com/questions/31845258/pandas-multi-index-plotting

	import pandas as pd
	import matplotlib.pyplot as plt
	from itertools import groupby
	import numpy as np
	%matplotlib inline

	groups = ('Group 1', 'Group 2')
	sexes = ('Male', 'Female')

	fig, ax = plt.subplots(len(set(df_all.structure))-1,len(df_all.columns)-1,figsize=(30.0, 30.0), sharey=False) #, tight_layout=True, sharex=True,

	for j, struc in enumerate(set(df_all.structure)): #19 structures
	df_onestruc=df_all[df_all.structure==struc]
	df_onestruc.index=df_onestruc['index']
	df_onestruc=df_onestruc.drop(['structure', 'index'], axis=1)
	for i, col in enumerate(df_onestruc.columns): # 18 parameters
	ax[i,j].plot(df_onestruc[col])
	ax[i,j].grid(True)
	ax[i,j].get_yaxis().set_ticks([]) #.set_visible(False)