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https://github.com/Ousret/kiss-headers

Python package for HTTP/1.1 style headers. Parse headers to objects. Most advanced available structure for http headers.
https://github.com/Ousret/kiss-headers

cookie cookies email-parsing header header-only header-parser headers http http-headers parser python requests

Last synced: about 2 months ago
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Python package for HTTP/1.1 style headers. Parse headers to objects. Most advanced available structure for http headers.

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README

        

HTTP Headers, the Complete Toolkit 🧰


Object-oriented headers. Kind of structured headers.








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### ❓ Why

No matter if you are currently dealing with code using HTTP or IMAP _(message, email)_, you should not worry about easily accessing and exploiting headers.


using kiss-headers from python interpreter

I have seen so many chunks of code trying to deal with these headers; often I saw this implementation:
```python
# No more of that!
charset = headers['Content-Type'].split(';')[-1].split('=')[-1].replace('"', '')
# That too..
response = get(
"https://httpbin.org/headers",
headers={
"user-agent": "custom/2.22",
"referer": "https://www.google.com",
"accept": "text/html",
"accept-language": "en-US",
"custom-header-xyz": "hello; charset=utf-8"
}
)
```

**Scroll down and see how you could do it from now on.**

## πŸ”ͺ Features

`kiss-headers` is a basic library that allow you to handle headers as objects.

* A backwards-compatible syntax using bracket style.
* Capability to alter headers using simple, human-readable operator notation `+` and `-`.
* Flexibility if headers are from an email or HTTP, use as you need with one library.
* Ability to parse any object and extract recognized headers from it, it also supports UTF-8 encoded headers.
* Offer an opinionated way to un/serialize headers.
* Fully type-annotated.
* Provide great auto-completion in Python interpreter or any capable IDE.
* No dependencies. Never will be.
* Support JSON in header value.
* 90% test coverage.

Plus all the features that you would expect from handling headers...

* Properties syntax for headers and attribute in a header.
* Supports headers and attributes OneToOne, OneToMany and ManySquashedIntoOne.
* Capable of parsing `bytes`, `fp`, `str`, `dict`, `email.Message`, `requests.Response`, `niquests.Response`, `httpx._models.Response` and `urllib3.HTTPResponse`.
* Automatically unquote and unfold the value of an attribute when retrieving it.
* Keep headers and attributes ordering.
* Case-insensitive with header name and attribute key.
* Character `-` equal `_` in addition of above feature.
* Any syntax you like, we like.

### ✨ Installation

Whatever you like, use `pipenv` or `pip`, it simply works. Requires Python 3.7+ installed.
```sh
pip install kiss-headers --upgrade
```

This project is included in [Niquests](https://github.com/jawah/niquests)! Your awesome drop-in replacement for Requests!

### 🍰 Usage

#### Quick start
`parse_it()` method takes `bytes`, `str`, `fp`, `dict`, `email.Message` or even a `requests.Response` or `httpx._models.Response` itself and returns a `Headers` object.

```python
from requests import get
from kiss_headers import parse_it

response = get('https://www.google.fr')
headers = parse_it(response)

headers.content_type.charset # output: ISO-8859-1
# Its the same as
headers["content-type"]["charset"] # output: ISO-8859-1
```

and also, the other way around:

```python
from requests import get
from kiss_headers import Headers, UserAgent, Referer, UpgradeInsecureRequests, Accept, AcceptLanguage, CustomHeader

class CustomHeaderXyz(CustomHeader):

__squash__ = False

def __init__(self, charset: str = "utf-8"):
super().__init__("hello", charset=charset)

# Officially supported with requests
response = get(
"https://httpbin.org/headers",
headers=Headers(
UserAgent("custom/2.22"),
Referer("https://www.google.com"),
UpgradeInsecureRequests(),
Accept("text/html"),
AcceptLanguage("en-US"),
CustomHeaderXyz()
)
)
```

httpbin should get back with:

```json
{
"headers": {
"Accept": "text/html",
"Accept-Encoding": "identity",
"Accept-Language": "en-US",
"Custom-Header-Xyz": "hello; charset=\"utf-8\"",
"Host": "httpbin.org",
"Referer": "https://www.google.com",
"Upgrade-Insecure-Requests": "1",
"User-Agent": "custom/2.22",
"X-Amzn-Trace-Id": "Root=1-622sz46b-973c5671113f58d611972de"
}
}
```

Do not forget that headers are not OneToOne. One header can be repeated multiple times and attributes can have multiple values within the same header.

```python
from kiss_headers import parse_it

my_cookies = """set-cookie: 1P_JAR=2020-03-16-21; expires=Wed, 15-Apr-2020 21:27:31 GMT; path=/; domain=.google.fr; Secure; SameSite=none
set-cookie: CONSENT=WP.284b10; expires=Fri, 01-Jan-2038 00:00:00 GMT; path=/; domain=.google.fr"""

headers = parse_it(my_cookies)

type(headers.set_cookie) # output: list
headers.set_cookie[0].expires # output: Wed, 15-Apr-2020 21:27:31 GMT
headers.set_cookie[0]._1p_jar # output: 2020-03-16-21
headers.set_cookie[0]["1P_JAR"] # output: 2020-03-16-21
```

Since v2.1 you can transform an Header object to its target `CustomHeader` subclass to access more methods.

```python
from kiss_headers import parse_it, get_polymorphic, SetCookie

my_cookies = """set-cookie: 1P_JAR=2020-03-16-21; expires=Wed, 15-Apr-2020 21:27:31 GMT; path=/; domain=.google.fr; Secure; SameSite=none
set-cookie: CONSENT=WP.284b10; expires=Fri, 01-Jan-2038 00:00:00 GMT; path=/; domain=.google.fr"""

headers = parse_it(my_cookies)

type(headers.set_cookie[0]) # output: Header

set_cookie = get_polymorphic(headers.set_cookie[0], SetCookie)

type(set_cookie) # output: SetCookie

set_cookie.get_cookie_name() # output: 1P_JAR
set_cookie.get_expire() # output: datetime(...)
```

Just a note: Accessing a header that has the same name as a reserved keyword must be done this way :
```python
headers = parse_it('From: Ousret; origin=www.github.com\nIS: 1\nWhile: Not-True')

# this flavour
headers.from_ # to access From, just add a single underscore to it
# or.. just using :
headers['from']
```

#### ✍️Serialization

Since version 2.3.0 the package offer the possibility to un/serialize `Headers`.

```python
from requests import get
from kiss_headers import parse_it, dumps

json_repr: str = dumps(
parse_it(
get("https://www.google.fr")
),
indent=4
)

print(json_repr) # See the result bellow

# Additionally, how to parse the JSON repr to Headers again
headers = parse_it(json_repr) # Yes! that easy!
```

```json
{
"Date": [
{
"Tue, 02 Feb 2021 21:43:13 GMT": null
}
],
"Expires": [
{
"-1": null
}
],
"Cache-Control": [
{
"private": null
},
{
"max-age": "0"
}
],
"Content-Type": [
{
"text/html": null,
"charset": "ISO-8859-1"
}
],
"P3P": [
{
"CP": "This is not a P3P policy! See g.co/p3phelp for more info."
}
],
"Content-Encoding": [
{
"gzip": null
}
],
"Server": [
{
"gws": null
}
],
"X-XSS-Protection": [
{
"0": null
}
],
"X-Frame-Options": [
{
"SAMEORIGIN": null
}
],
"Set-Cookie": [
{
"NID": "208=D5XUqjrP9PNpiZu4laa_0xvy_IxBzQLtfxqeAqcPBgiY2y5sfSF51IFuXZnH0zDAF1KZ8x-0VsRyGOM0aStIzCUfdiPBOCxHSxUv39N0vwzku3aI2UkeRXhWw8-HWw5Ob41GB0PZi2coQsPM7ZEQ_fl9PlQ_ld1KrPA",
"expires": "Wed, 04-Aug-2021 21:43:13 GMT",
"path": "/",
"domain": ".google.fr",
"HttpOnly": null
},
{
"CONSENT": "PENDING+880",
"expires": "Fri, 01-Jan-2038 00:00:00 GMT",
"path": "/",
"domain": ".google.fr"
}
],
"Alt-Svc": [
{
"h3-29": ":443",
"ma": "2592000"
},
{
"h3-T051": ":443",
"ma": "2592000"
},
{
"h3-Q050": ":443",
"ma": "2592000"
},
{
"h3-Q046": ":443",
"ma": "2592000"
},
{
"h3-Q043": ":443",
"ma": "2592000"
},
{
"quic": ":443",
"ma": "2592000",
"v": "46,43"
}
],
"Transfer-Encoding": [
{
"chunked": null
}
]
}
```

Alternatively you may use `from kiss_headers import parse_it, encode, decode` to transform `Headers` to `dict` (instead of JSON) or the other way around.
Understand that the `dict` returned in `encode` will differ from the method `to_dict()` in `Headers`.

#### πŸ› οΈ Create headers from objects

Introduced in the version 2.0, kiss-headers now allow you to create headers with more than 40+ ready-to-use, fully documented, header objects.

1st example usage
```python
from kiss_headers import Headers, Authorization
from requests import get

response = get("https://httpbin.org/bearer", headers=Headers(Authorization("Bearer", "qwerty")))
print(response.status_code) # 200
```

2nd example usage
```python
from kiss_headers import *

headers = (
Host("developer.mozilla.org")
+ UserAgent(
"Mozilla/5.0 (Macintosh; Intel Mac OS X 10.9; rv:50.0) Gecko/20100101 Firefox/50.0"
)
+ Accept("text/html")
+ Accept("application/xhtml+xml")
+ Accept("application/xml", qualifier=0.9)
+ Accept(qualifier=0.8)
+ AcceptLanguage("en-US")
+ AcceptLanguage("en", qualifier=0.5)
+ AcceptEncoding("gzip")
+ AcceptEncoding("deflate")
+ AcceptEncoding("br")
+ Referer("https://developer.mozilla.org/testpage.html")
+ Connection(should_keep_alive=True)
+ UpgradeInsecureRequests()
+ IfModifiedSince("Mon, 18 Jul 2016 02:36:04 GMT")
+ IfNoneMatch("c561c68d0ba92bbeb8b0fff2a9199f722e3a621a")
+ CacheControl(max_age=0)
)

raw_headers = str(headers)
```

`raw_headers` now retain the following :

```
Host: developer.mozilla.org
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.9; rv:50.0) Gecko/20100101 Firefox/50.0
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, br
Referer: https://developer.mozilla.org/testpage.html
Connection: keep-alive
Upgrade-Insecure-Requests: 1
If-Modified-Since: Mon, 18 Jul 2016 02:36:04 GMT
If-None-Match: "c561c68d0ba92bbeb8b0fff2a9199f722e3a621a"
Cache-Control: max-age="0"
```

See the complete list of available header class in the full documentation.
Also, you can create your own custom header object using the class `kiss_headers.CustomHeader`.

## πŸ“œ Documentation

See the full documentation for advanced usages : [jawah.github.io/kiss-headers](https://jawah.github.io/kiss-headers/)

## πŸ‘€ Contributing

Contributions, issues and feature requests are very much welcome.

Feel free to check [issues page](https://github.com/jawah/kiss-headers/issues) if you want to contribute.

Firstly, after getting your own local copy, run `./scripts/install` to initialize your virtual environment.
Then run `./scripts/check` before you commit, make sure everything is still working.

Remember to keep it sweet and simple when contributing to this project.

## πŸ“ License

Copyright Β© 2020 [Ahmed TAHRI @Ousret](https://github.com/Ousret).

This project is [MIT](https://github.com/jawah/kiss-headers/blob/master/LICENSE) licensed.