Remove python 2.7/3.5 compatibility code (#3405)

* Remove python 2.7/3.5 compatibility code

This change removes code, dependencies and tests related to python 2.7
and 3.5 compatibility. The minimum supported runtime python version
for poetry is now 3.6.

* tests: mitigate httpretty urllib incompatibility

Relates-to: #3404

poetry/config/config.py

@@ -4,14 +4,13 @@
 import re
 
 from copy import deepcopy
+from pathlib import Path
 from typing import Any
 from typing import Callable
 from typing import Dict
 from typing import Optional
 
 from poetry.locations import CACHE_DIR
-from poetry.utils._compat import Path
-from poetry.utils._compat import basestring
 
 from .config_source import ConfigSource
 from .dict_config_source import DictConfigSource
@@ -131,7 +130,7 @@ def get(self, setting_name, default=None):  # type: (str, Any) -> Any
         return self.process(value)
 
     def process(self, value):  # type: (Any) -> Any
-        if not isinstance(value, basestring):
+        if not isinstance(value, str):
             return value
 
         return re.sub(r"{(.+?)}", lambda m: self.get(m.group(1)), value)

poetry/console/application.py

@@ -60,8 +60,9 @@ def __init__(self):
 
     @property
     def poetry(self):
+        from pathlib import Path
+
         from poetry.factory import Factory
-        from poetry.utils._compat import Path
 
         if self._poetry is not None:
             return self._poetry

poetry/console/commands/check.py

@@ -1,6 +1,7 @@
+from pathlib import Path
+
 from poetry.core.pyproject.toml import PyProjectTOML
 from poetry.factory import Factory
-from poetry.utils._compat import Path
 
 from .command import Command
 

poetry/console/commands/config.py

@@ -41,10 +41,11 @@ class ConfigCommand(Command):
 
     @property
     def unique_config_values(self):
+        from pathlib import Path
+
         from poetry.config.config import boolean_normalizer
         from poetry.config.config import boolean_validator
         from poetry.locations import CACHE_DIR
-        from poetry.utils._compat import Path
 
         unique_config_values = {
             "cache-dir": (
@@ -75,10 +76,10 @@ def unique_config_values(self):
         return unique_config_values
 
     def handle(self):
+        from pathlib import Path
+
         from poetry.config.file_config_source import FileConfigSource
         from poetry.locations import CONFIG_DIR
-        from poetry.utils._compat import Path
-        from poetry.utils._compat import basestring
 
         config = Factory.create_config(self.io)
         config_file = TOMLFile(Path(CONFIG_DIR) / "config.toml")
@@ -134,7 +135,7 @@ def handle(self):
 
                 value = config.get(setting_key)
 
-                if not isinstance(value, basestring):
+                if not isinstance(value, str):
                     value = json.dumps(value)
 
                 self.line(value)
@@ -267,8 +268,6 @@ def _handle_single_value(self, source, key, callbacks, values):
         return 0
 
     def _list_configuration(self, config, raw, k=""):
-        from poetry.utils._compat import basestring
-
         orig_k = k
         for key, value in sorted(config.items()):
             if k + key in self.LIST_PROHIBITED_SETTINGS:
@@ -293,7 +292,7 @@ def _list_configuration(self, config, raw, k=""):
                 message = "<c1>{}</c1> = <c2>{}</c2>".format(
                     k + key, json.dumps(raw_val)
                 )
-            elif isinstance(raw_val, basestring) and raw_val != value:
+            elif isinstance(raw_val, str) and raw_val != value:
                 message = "<c1>{}</c1> = <c2>{}</c2>  # {}".format(
                     k + key, json.dumps(raw_val), value
                 )

poetry/console/commands/init.py

@@ -4,7 +4,9 @@
 import os
 import re
 import sys
+import urllib.parse
 
+from pathlib import Path
 from typing import Dict
 from typing import List
 from typing import Tuple
@@ -15,9 +17,6 @@
 
 from poetry.core.pyproject import PyProjectException
 from poetry.core.pyproject.toml import PyProjectTOML
-from poetry.utils._compat import OrderedDict
-from poetry.utils._compat import Path
-from poetry.utils._compat import urlparse
 
 from .command import Command
 from .env_command import EnvCommand
@@ -63,9 +62,10 @@ def __init__(self):
         self._pool = None
 
     def handle(self):
+        from pathlib import Path
+
         from poetry.core.vcs.git import GitConfig
         from poetry.layouts import layout
-        from poetry.utils._compat import Path
         from poetry.utils.env import SystemEnv
 
         pyproject = PyProjectTOML(Path.cwd() / "pyproject.toml")
@@ -390,7 +390,7 @@ def _parse_requirements(
                 extras = [e.strip() for e in extras_m.group(1).split(",")]
                 requirement, _ = requirement.split("[")
 
-            url_parsed = urlparse.urlparse(requirement)
+            url_parsed = urllib.parse.urlparse(requirement)
             if url_parsed.scheme and url_parsed.netloc:
                 # Url
                 if url_parsed.scheme in ["git+https", "git+ssh"]:
@@ -400,7 +400,7 @@ def _parse_requirements(
                     parsed = ParsedUrl.parse(requirement)
                     url = Git.normalize_url(requirement)
 
-                    pair = OrderedDict([("name", parsed.name), ("git", url.url)])
+                    pair = dict([("name", parsed.name), ("git", url.url)])
                     if parsed.rev:
                         pair["rev"] = url.revision
 
@@ -417,9 +417,7 @@ def _parse_requirements(
                 elif url_parsed.scheme in ["http", "https"]:
                     package = Provider.get_package_from_url(requirement)
 
-                    pair = OrderedDict(
-                        [("name", package.name), ("url", package.source_url)]
-                    )
+                    pair = dict([("name", package.name), ("url", package.source_url)])
                     if extras:
                         pair["extras"] = extras
 
@@ -435,7 +433,7 @@ def _parse_requirements(
                     package = Provider.get_package_from_directory(path)
 
                 result.append(
-                    OrderedDict(
+                    dict(
                         [
                             ("name", package.name),
                             ("path", path.relative_to(cwd).as_posix()),
@@ -451,7 +449,7 @@ def _parse_requirements(
             )
             pair = pair.strip()
 
-            require = OrderedDict()
+            require = dict()
             if " " in pair:
                 name, version = pair.split(" ", 2)
                 extras_m = re.search(r"\[([\w\d,-_]+)\]$", name)

poetry/console/commands/new.py

@@ -20,10 +20,11 @@ class NewCommand(Command):
     ]
 
     def handle(self):
+        from pathlib import Path
+
         from poetry.core.semver import parse_constraint
         from poetry.core.vcs.git import GitConfig
         from poetry.layouts import layout
-        from poetry.utils._compat import Path
         from poetry.utils.env import SystemEnv
 
         if self.option("src"):

poetry/console/commands/publish.py

@@ -1,6 +1,6 @@
-from cleo import option
+from pathlib import Path
 
-from poetry.utils._compat import Path
+from cleo import option
 
 from .command import Command
 

poetry/console/commands/self/update.py

@@ -62,7 +62,7 @@ class SelfUpdateCommand(Command):
 
     @property
     def home(self):
-        from poetry.utils._compat import Path
+        from pathlib import Path
 
         return Path(os.environ.get("POETRY_HOME", "~/.poetry")).expanduser()
 
@@ -239,7 +239,7 @@ def process(self, *args):
         return subprocess.check_output(list(args), stderr=subprocess.STDOUT)
 
     def _check_recommended_installation(self):
-        from poetry.utils._compat import Path
+        from pathlib import Path
 
         current = Path(__file__)
         try:

poetry/console/config/application_config.py

@@ -30,7 +30,7 @@
 from poetry.console.commands.installer_command import InstallerCommand
 from poetry.console.logging.io_formatter import IOFormatter
 from poetry.console.logging.io_handler import IOHandler
-from poetry.utils._compat import PY36
+from poetry.mixology.solutions.providers import PythonRequirementSolutionProvider
 
 
 class ApplicationConfig(BaseApplicationConfig):
@@ -55,14 +55,9 @@ def configure(self):
         self.add_event_listener(PRE_HANDLE, self.set_env)
         self.add_event_listener(PRE_HANDLE, self.set_installer)
 
-        if PY36:
-            from poetry.mixology.solutions.providers import (
-                PythonRequirementSolutionProvider,
-            )
-
-            self._solution_provider_repository.register_solution_providers(
-                [PythonRequirementSolutionProvider]
-            )
+        self._solution_provider_repository.register_solution_providers(
+            [PythonRequirementSolutionProvider]
+        )
 
     def register_command_loggers(
         self, event, event_name, _

poetry/factory.py

@@ -1,6 +1,7 @@
 from __future__ import absolute_import
 from __future__ import unicode_literals
 
+from pathlib import Path
 from typing import Dict
 from typing import Optional
 
@@ -16,7 +17,6 @@
 from .packages.locker import Locker
 from .poetry import Poetry
 from .repositories.pypi_repository import PyPiRepository
-from .utils._compat import Path
 
 
 class Factory(BaseFactory):

poetry/inspection/info.py

@@ -4,6 +4,7 @@
 import tarfile
 import zipfile
 
+from pathlib import Path
 from typing import Dict
 from typing import Iterator
 from typing import List
@@ -17,8 +18,6 @@
 from poetry.core.packages import ProjectPackage
 from poetry.core.packages import dependency_from_pep_508
 from poetry.core.pyproject.toml import PyProjectTOML
-from poetry.core.utils._compat import PY35
-from poetry.core.utils._compat import Path
 from poetry.core.utils.helpers import parse_requires
 from poetry.core.utils.helpers import temporary_directory
 from poetry.core.version.markers import InvalidMarker
@@ -364,13 +363,10 @@ def _find_dist_info(path):  # type: (Path) -> Iterator[Path]
         :param path: Path to search.
         """
         pattern = "**/*.*-info"
-        if PY35:
-            # Sometimes pathlib will fail on recursive symbolic links, so we need to workaround it
-            # and use the glob module instead. Note that this does not happen with pathlib2
-            # so it's safe to use it for Python < 3.4.
-            directories = glob.iglob(path.joinpath(pattern).as_posix(), recursive=True)
-        else:
-            directories = path.glob(pattern)
+        # Sometimes pathlib will fail on recursive symbolic links, so we need to workaround it
+        # and use the glob module instead. Note that this does not happen with pathlib2
+        # so it's safe to use it for Python < 3.4.
+        directories = glob.iglob(path.joinpath(pattern).as_posix(), recursive=True)
 
         for d in directories:
             yield Path(d)

poetry/installation/authenticator.py

@@ -1,5 +1,6 @@
 import logging
 import time
+import urllib.parse
 
 from typing import TYPE_CHECKING
 
@@ -8,7 +9,6 @@
 import requests.exceptions
 
 from poetry.exceptions import PoetryException
-from poetry.utils._compat import urlparse
 from poetry.utils.password_manager import PasswordManager
 
 
@@ -107,7 +107,7 @@ def request(
     def get_credentials_for_url(
         self, url
     ):  # type: (str) -> Tuple[Optional[str], Optional[str]]
-        parsed_url = urlparse.urlsplit(url)
+        parsed_url = urllib.parse.urlsplit(url)
 
         netloc = parsed_url.netloc
 
@@ -130,7 +130,7 @@ def get_credentials_for_url(
                     credentials = auth, None
 
                 credentials = tuple(
-                    None if x is None else urlparse.unquote(x) for x in credentials
+                    None if x is None else urllib.parse.unquote(x) for x in credentials
                 )
 
         if credentials[0] is not None or credentials[1] is not None:
@@ -156,7 +156,7 @@ def _get_credentials_for_netloc_from_config(
             if not url:
                 continue
 
-            parsed_url = urlparse.urlsplit(url)
+            parsed_url = urllib.parse.urlsplit(url)
 
             if netloc == parsed_url.netloc:
                 auth = self._password_manager.get_http_auth(repository_name)

poetry/installation/chef.py

@@ -1,10 +1,10 @@
 import hashlib
 import json
 
+from pathlib import Path
 from typing import TYPE_CHECKING
 
 from poetry.core.packages.utils.link import Link
-from poetry.utils._compat import Path
 
 from .chooser import InvalidWheelName
 from .chooser import Wheel