From 77a361966a6cbe73ba153710f10f32cc27d167f5 Mon Sep 17 00:00:00 2001
From: George Thomas <thegeorgeous@users.noreply.github.com>
Date: Wed, 15 Jan 2020 10:26:07 +0530
Subject: Fix warning raised for using `is not` to compare string literal
 (#1139)

Using `is not` for comparing string literals raises warning that != should be
used.

Fixes #1138
---
 AUTHORS       | 1 +
 changelog.rst | 7 ++++++-
 pgcli/main.py | 2 +-
 3 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/AUTHORS b/AUTHORS
index faf9b189..b0401383 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -103,6 +103,7 @@ Contributors:
     * Martin Matejek (mmtj)
     * Jonas Jelten
     * BrownShibaDog
+    * George Thomas(thegeorgeous)
 
 Creator:
 --------
diff --git a/changelog.rst b/changelog.rst
index 1b12b15f..991139be 100644
--- a/changelog.rst
+++ b/changelog.rst
@@ -7,11 +7,15 @@ Features:
 * Add `__main__.py` file to execute pgcli as a package directly (#1123).
 * Add support for ANSI escape sequences for coloring the prompt (#1122).
 
+Bug fixes:
+
+* Fix warning raised for using `is not` to compare string literal
+
 Internal:
 ---------
 
 * Fix dead link in development guide. (Thanks: `BrownShibaDog`_)
-  
+
 2.2.0:
 ======
 
@@ -1023,3 +1027,4 @@ Improvements:
 .. _`Sebastian Janko`: https://github.com/sebojanko
 .. _`Pedro Ferrari`: https://github.com/petobens
 .. _`BrownShibaDog`: https://github.com/BrownShibaDog
+.. _`thegeorgeous`: https://github.com/thegeorgeous
diff --git a/pgcli/main.py b/pgcli/main.py
index 2301d16f..54d4941f 100644
--- a/pgcli/main.py
+++ b/pgcli/main.py
@@ -1258,7 +1258,7 @@ def cli(
     if list_databases:
         database = "postgres"
 
-    if dsn is not "":
+    if dsn != "":
         try:
             cfg = load_config(pgclirc, config_full_path)
             dsn_config = cfg["alias_dsn"][dsn]
-- 
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