Python Collection 20150301

This is a next version of Python Collection 20150209 - Shammerism.
Adding argparse examples.

If-else

if x > 0:
    print "X is bigger than 0."
else:
    print "X is less than 0."

If-elif-else

if x > 0:
    print "X is bigger than 0."
elif x == 0:
    print "X is zero."
else:
    print "X is less than 0."

File read and output(like cat which is major unix command line tool)

f = open('test-text.txt')
data = f.read()
f.close()
lines = data.split('\n')
for line in lines:
    if 0 < line.find(target) :
        print line

Send HTTP GET Requests

connection = httplib.HTTPSConnection(host)
connection.request("GET", uri)
response = json.loads(connection.getresponse().read())
print response

Send HTTP POST Requests

requestHeader = {"Content-type": "application/x-www-form-urlencoded"}
connection = httplib.HTTPSConnection(host)
connection.request("POST", uri, parameters, requestHeader)
response = json.loads(connection.getresponse().read())
print response

If post data is json format, Content-type should be below.

requestHeader = {"Content-type":"application/json"}

Parsing command line arguments

import argparse
parser = argparse.ArgumentParser()
parser.add_argument('-x', dest = 'xxx', required = True)
parser.add_argument('-y', dest = 'yyy', default ='')
clarguments = vars(parser.parse_args())

print '-x value is ' + clarguments['xxx']
print '-y value is ' + clarguments['yyy']

The param required means that this program finished with failure if this argument wouldn't be passed.
The param dest means how to access this argument value in this script.
The param default means the default value if this argument wouldn't be passed as a commandline argument.