PYTHON-3423 Make dnspython a required dependency (#1055)

README.rst

@@ -90,6 +90,11 @@ Dependencies
 
 PyMongo supports CPython 3.7+ and PyPy3.7+.
 
+Required dependencies:
+
+Support for mongodb+srv:// URIs requires `dnspython
+<https://pypi.python.org/pypi/dnspython>`_
+
 Optional dependencies:
 
 GSSAPI authentication requires `pykerberos
@@ -104,10 +109,6 @@ MONGODB-AWS authentication requires `pymongo-auth-aws
 
   $ python -m pip install "pymongo[aws]"
 
-Support for mongodb+srv:// URIs requires `dnspython
-<https://pypi.python.org/pypi/dnspython>`_::
-
-  $ python -m pip install "pymongo[srv]"
 
 OCSP (Online Certificate Status Protocol) requires `PyOpenSSL
 <https://pypi.org/project/pyOpenSSL/>`_, `requests

doc/changelog.rst

@@ -4,6 +4,10 @@ Changelog
 Changes in Version 4.3
 ----------------------
 
+`dnspython <https://pypi.python.org/pypi/dnspython>`_ is now a required
+dependency. This change makes PyMongo easier to install for use with "mongodb+srv://"
+connection strings and `MongoDB Atlas <https://www.mongodb.com/cloud>`_.
+
 PyMongo 4.3 brings a number of improvements including:
 
 - Added support for decoding BSON datetimes outside of the range supported

doc/installation.rst

@@ -30,6 +30,12 @@ Dependencies
 
 PyMongo supports CPython 3.7+ and PyPy3.7+.
 
+Required dependencies:
+
+Support for mongodb+srv:// URIs requires `dnspython
+<https://pypi.python.org/pypi/dnspython>`_
+
+
 Optional dependencies:
 
 GSSAPI authentication requires `pykerberos
@@ -44,10 +50,7 @@ dependency can be installed automatically along with PyMongo::
 
   $ python3 -m pip install "pymongo[aws]"
 
-Support for mongodb+srv:// URIs requires `dnspython
-<https://pypi.python.org/pypi/dnspython>`_::
 
-  $ python3 -m pip install "pymongo[srv]"
 
 :ref:`OCSP` requires `PyOpenSSL
 <https://pypi.org/project/pyOpenSSL/>`_, `requests

pymongo/uri_parser.py

@@ -469,8 +469,8 @@ def parse_uri(
             raise ConfigurationError(
                 'The "dnspython" module must be '
                 "installed to use mongodb+srv:// URIs. "
-                "To fix this error install pymongo with the srv extra:\n "
-                '%s -m pip install "pymongo[srv]"' % (python_path)
+                "To fix this error install pymongo again:\n "
+                "%s -m pip install pymongo>=4.3" % (python_path)
             )
         is_srv = True
         scheme_free = uri[SRV_SCHEME_LEN:]

setup.py

@@ -281,7 +281,7 @@ extras_require = {
     "snappy": ["python-snappy"],
     "zstd": ["zstandard"],
     "aws": ["pymongo-auth-aws<2.0.0"],
-    "srv": ["dnspython>=1.16.0,<3.0.0"],
+    "srv": [],
 }
 
 # GSSAPI extras
@@ -314,7 +314,7 @@ setup(
     author="The MongoDB Python Team",
     url="http://github.com/mongodb/mongo-python-driver",
     keywords=["mongo", "mongodb", "pymongo", "gridfs", "bson"],
-    install_requires=[],
+    install_requires=["dnspython>=1.16.0,<3.0.0"],
     license="Apache License, Version 2.0",
     python_requires=">=3.7",
     classifiers=[