From 8925a1942e02c1982c0d9528728ff459f3b9b231 Mon Sep 17 00:00:00 2001
From: Gui-FernandesBR <guilherme_fernandes@usp.br>
Date: Thu, 13 Jun 2024 22:02:19 -0300
Subject: [PATCH] MNT: singleton-comparison != None

---
 rocketpy/environment/environment.py   | 10 +++++-----
 rocketpy/prints/environment_prints.py |  9 ++++++---
 2 files changed, 11 insertions(+), 8 deletions(-)

diff --git a/rocketpy/environment/environment.py b/rocketpy/environment/environment.py
index cbf939c5c..cb414d610 100644
--- a/rocketpy/environment/environment.py
+++ b/rocketpy/environment/environment.py
@@ -363,7 +363,7 @@ def __init__(
         self.set_atmospheric_model("standard_atmosphere")
 
         # Save date
-        if date != None:
+        if date is not None:
             self.set_date(date, timezone)
         else:
             self.date = None
@@ -378,7 +378,7 @@ def __init__(
         # Save latitude and longitude
         self.latitude = latitude
         self.longitude = longitude
-        if latitude != None and longitude != None:
+        if latitude is not None and longitude is not None:
             self.set_location(latitude, longitude)
         else:
             self.latitude, self.longitude = None, None
@@ -664,7 +664,7 @@ def set_elevation(self, elevation="Open-Elevation"):
         """
         if elevation != "Open-Elevation" and elevation != "SRTM":
             self.elevation = elevation
-        # elif elevation == "SRTM" and self.latitude != None and self.longitude != None:
+        # elif elevation == "SRTM" and self.latitude is not None and self.longitude is not None:
         #     # Trigger the authentication flow.
         #     #ee.Authenticate()
         #     # Initialize the library.
@@ -3325,9 +3325,9 @@ def all_info_returned(self):
             surface_air_density=self.density(self.elevation),
             surface_speed_of_sound=self.speed_of_sound(self.elevation),
         )
-        if self.datetime_date != None:
+        if self.datetime_date is not None:
             info["launch_date"] = self.datetime_date.strftime("%Y-%d-%m %H:%M:%S")
-        if self.latitude != None and self.longitude != None:
+        if self.latitude is not None and self.longitude is not None:
             info["lat"] = self.latitude
             info["lon"] = self.longitude
         if info["model_type"] in ["Forecast", "Reanalysis", "Ensemble"]:
diff --git a/rocketpy/prints/environment_prints.py b/rocketpy/prints/environment_prints.py
index 75c3a1e15..2a9e97b43 100644
--- a/rocketpy/prints/environment_prints.py
+++ b/rocketpy/prints/environment_prints.py
@@ -52,7 +52,7 @@ def launch_site_details(self):
         print("\nLaunch Site Details\n")
         time_format = "%Y-%m-%d %H:%M:%S"
         if (
-            self.environment.datetime_date != None
+            self.environment.datetime_date is not None
             and "UTC" not in self.environment.timezone
         ):
             print(
@@ -62,13 +62,16 @@ def launch_site_details(self):
                 self.environment.local_date.strftime(time_format),
                 self.environment.timezone,
             )
-        elif self.environment.datetime_date != None:
+        elif self.environment.datetime_date is not None:
             print(
                 "Launch Date:",
                 self.environment.datetime_date.strftime(time_format),
                 "UTC",
             )
-        if self.environment.latitude != None and self.environment.longitude != None:
+        if (
+            self.environment.latitude is not None
+            and self.environment.longitude is not None
+        ):
             print("Launch Site Latitude: {:.5f}°".format(self.environment.latitude))
             print("Launch Site Longitude: {:.5f}°".format(self.environment.longitude))
         print("Reference Datum: " + self.environment.datum)