Some recent diversions from requests is not documented

[heroesm]

Some recent diversions from requests is not documented in Requests Compatibility Guide

From httpx 0.19.0:

• Strictly enforce that upload files must be opened in binary mode. (Pull enforce-upload-files-binary-type #1736)

>>> import httpx
>>> import requests
>>> url = 'http://httpbin.org/anything'
>>> files = {'file': ('report.csv', 'some,data,to,send\nanother,row,to,send\n')}
>>> requests.post(url, files=files)
<Response [200]>
>>> httpx.post(url, files=files)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File ".../site-packages/httpx/_api.py", line 320, in post
    trust_env=trust_env,
  File ".../site-packages/httpx/_api.py", line 110, in request
    allow_redirects=allow_redirects,
  File ".../site-packages/httpx/_client.py", line 785, in request
    cookies=cookies,
  File ".../site-packages/httpx/_client.py", line 355, in build_request
    cookies=cookies,
  File ".../site-packages/httpx/_models.py", line 1097, in __init__
    headers, stream = encode_request(content, data, files, json)
  File ".../site-packages/httpx/_content.py", line 179, in encode_request
    return encode_multipart_data(data or {}, files, boundary)
  File ".../site-packages/httpx/_content.py", line 124, in encode_multipart_data
    multipart = MultipartStream(data=data, files=files, boundary=boundary)
  File ".../site-packages/httpx/_multipart.py", line 161, in __init__
    self.fields = list(self._iter_fields(data, files))
  File ".../site-packages/httpx/_multipart.py", line 175, in _iter_fields
    yield FileField(name=name, value=value)
  File ".../site-packages/httpx/_multipart.py", line 86, in __init__
    raise TypeError(f"Expected bytes or bytes-like object got: {type(fileobj)}")
TypeError: Expected bytes or bytes-like object got: <class 'str'>

From httpx 0.20.0

• The raise_for_status() method will now raise an exception for any responses except those with 2xx status codes. Previously only 4xx and 5xx status codes would result in an exception.

>>> import requests
>>> import httpx
>>> url = 'http://github.com'
>>> requests.get(url, allow_redirects=False).raise_for_status()
>>> httpx.get(url, follow_redirects=False).raise_for_status()
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File ".../site-packages/httpx/_models.py", line 1507, in raise_for_status
    raise HTTPStatusError(message, request=request, response=self)
httpx.HTTPStatusError: Redirect response '301 Moved Permanently' for url 'http://github.com'
Redirect location: 'https://github.com/'
For more information check: https://httpstatuses.com/301

These might be worth to be noted in https://www.python-httpx.org/compatibility/