A look from Ipython Notebook inverted.
Twitter @CodeDocta¶
Making an HTTP POST Request¶
import requests
from pprint import pprint
URL = 'http://127.0.0.1:5000/post'
REFERER = 'http://127.0.0.1:5000/forms/post'
UA = 'Mozilla/5.0 (Windows NT 6.1; WOW64; rv:37.0) Gecko/20100101 Firefox/37.0'
HEADERS = {
'Host': 'httpbin.org',
'Referer': REFERER,
'User-Agent': UA,
'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8',
'Accept-Language': 'en-US,en;q=0.5',
'Accept-Encoding': 'gzip, deflate',
'DNT': 1,
'Content-Type': 'application/x-www-form-urlencoded'
}
PARAMS = {
'custname': 'Nick',
'custtel': '777-867-5309',
'custemail': 'noob@lala.com',
'size': 'medium',
'topping': 'onion',
'delivery': '18:20',
'comments': 'I woutld like extra peppers please.'
}
PROXY = 'proxy goes here'
PROXIES = {
"http": "http://" + PROXY,
"https": "http://" + PROXY,
}
resp = requests.post(URL, data=PARAMS, headers=HEADERS, proxies=None)
resp.close()
resp.status_code
Cool we have our 200¶
This means it worked and we can do something else, like save all the inputs to a databease or file.¶
if resp.status_code == 200:
pprint(resp.text)
Without pprint it looks a little messy, try it on an real webpage.¶
pprint = pretty print¶
Well, that’s it…¶
Ok, so I lied. Let’s do some other cool stuff.¶
If is not the way to go here we need some exception handling.¶
PARAMS = {
'custname': 'Nick',
'custtel': '777-867-5309',
'custemail': 'noob@lala.com',
'size': 'medium',
'topping': 'mushroom',
'delivery': '18:20',
'comments': 'can you make it free?'
}
try:
r = requests.post("http://httpbin.org/pos", data=PARAMS, proxies=PROXIES)
print(r.text)
except Exception as postError:
print('AHHH... Your end of the world message!!!')
print(postError)
r.close()
I suggest you read deeply into the Exception Handling documentatoin there are many and Exception is the catch all. At some point I will do a tut on this module.¶
PARAMS = {
'custname': 'Nick',
'custtel': '888-867-5309',
'custemail': 'noob@lala.com',
'size': 'medium',
'topping': 'mushroom',
'delivery': '18:20',
'comments': 'can you make it free?'
}
try:
r = requests.post("http://127.0.0.1:5000/post", data=PARAMS, proxies=PROXIES, timeout=5)
print(r.text)
except Exception as postError:
print('You can put whatever on top of the real error.')
print(postError)
r.close()
As you can see I did not change the proxy to an real proxy however you see the error is quite telling.¶
You can see some defaults there like port, max redirects and I snuck in a timeout on you. There are 2 time outs one for the read and one for the server connection. Now that you are awhere you can go see more about them in the Requests documentation. It is done well so don’t be scared.¶
Timeouts http://docs.python-requests.org/en/latest/user/advanced/#timeouts and http://docs.python-requests.org/en/latest/user/quickstart/#timeouts¶
Requests has its own exception handling too http://docs.python-requests.org/en/latest/user/quickstart/#errors-and-exceptions¶
Let’s see how to unpack a list into variables. I do this because I can read without thinking about do I have the correct list item when I try to debug.¶
pList = ['77.888.45.80.8080', 'Jon Doe', '555-867-5309', 'Jon.Doe@Amail.com', 'large', 'mushroom', '12:00', 'Make sure that coke is a diet coke!!']
PROXY, CUST, PHONE, EMAIL, SIZE, TOP, TIME, COMM = pList
pList
Now we can use dynamic parameters…¶
PROXIES = PROXY
PARAMS = {
'custname': CUST,
'custtel': PHONE,
'custemail': EMAIL,
'size': SIZE,
'topping': TOP,
'delivery': TIME,
'comments': COMM
}
try:
r = requests.post("http://127.0.0.1:5000/post", data=PARAMS, proxies=None, timeout=5)
print(r.text)
except Exception as postError:
print('You can put whatever on top of the real error.')
print(postError)
r.close()
When we are done with or memory slots you can delete them with the “del” keyword…¶
PARAMS
del PARAMS
This way we don’t have memory leaks and build up. Use this on variables and iterables when you no longer need them.¶
PARAMS
thebotdoc 
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