From b9d19a64d7ee168abe8253578c1af6f50c0e07da Mon Sep 17 00:00:00 2001
From: Devesh Kumar Singh <deveshkusingh@gmail.com>
Date: Sun, 3 May 2020 01:44:35 +0530
Subject: [PATCH] List values per configuration file

---
 src/pip/_internal/commands/configuration.py | 17 ++++++++++++-----
 src/pip/_internal/configuration.py          |  5 +++++
 2 files changed, 17 insertions(+), 5 deletions(-)

diff --git a/src/pip/_internal/commands/configuration.py b/src/pip/_internal/commands/configuration.py
index abb4e42ac..4183c3417 100644
--- a/src/pip/_internal/commands/configuration.py
+++ b/src/pip/_internal/commands/configuration.py
@@ -51,7 +51,7 @@ class ConfigurationCommand(Command):
         %prog [<file-option>] get name
         %prog [<file-option>] set name value
         %prog [<file-option>] unset name
-        %prog [<file-option>] list-files
+        %prog [<file-option>] debug
     """
 
     def __init__(self, name, summary, isolated=False):
@@ -107,7 +107,7 @@ class ConfigurationCommand(Command):
             "get": self.get_name,
             "set": self.set_name_value,
             "unset": self.unset_name,
-            "list-files": self.list_config_files,
+            "debug": self.list_config_files,
         }
 
         # Determine action
@@ -172,7 +172,6 @@ class ConfigurationCommand(Command):
 
     def list_values(self, options, args):
         self._get_n_args(args, "list", n=0)
-
         for key, value in sorted(self.configuration.items()):
             write_output("%s=%r", key, value)
 
@@ -196,13 +195,21 @@ class ConfigurationCommand(Command):
 
     def list_config_files(self, options, args):
         self._get_n_args(args, "list-files", n=0)
-
         for variant, files in sorted(self.configuration.iter_config_files()):
             write_output("%s:", variant)
             for fname in files:
                 with indent_log():
+                    file_exists = os.path.exists(fname)
                     write_output("%s, exists: %r ",
-                                 fname, os.path.exists(fname))
+                                 fname, file_exists)
+                    if file_exists:
+                        self.print_config_file_values(variant)
+
+    def print_config_file_values(self, variant):
+        for name, value in self.configuration. \
+                get_values_in_config(variant).items():
+            with indent_log():
+                write_output("%s: %s ", name, value)
 
     def open_in_editor(self, options, args):
         editor = self._determine_editor(options)
diff --git a/src/pip/_internal/configuration.py b/src/pip/_internal/configuration.py
index 894cdeaf6..bad335714 100644
--- a/src/pip/_internal/configuration.py
+++ b/src/pip/_internal/configuration.py
@@ -401,6 +401,11 @@ class Configuration(object):
         # finally virtualenv configuration first trumping others
         yield kinds.SITE, config_files[kinds.SITE]
 
+    def get_values_in_config(self, variant):
+        # type: (Kind) -> Dict[str, Any]
+        """Get values present in a config file"""
+        return self._config[variant]
+
     def _get_parser_to_modify(self):
         # type: () -> Tuple[str, RawConfigParser]
         # Determine which parser to modify