Merge pull request #763 from yanliutafewa/main

Add features to "API Based Weather Report" - #744

Author: Mrinank-Bhowmick

projects/API Based Weather Report/API Based Weather Report.py

@@ -1,9 +1,19 @@
 import requests
 from datetime import datetime
+from Util_Functions import wind_degree_to_direction, unix_timestamp_to_localtime, convert_temperature
 
 
-# Function to fetch weather data from OpenWeatherMap API
 def fetch_weather(api_key, location):
+    """
+    Function to fetch weather data from OpenWeatherMap API.
+
+    Parameters:
+    api_key (str): API key.
+    location (str): City name.
+
+    Returns:
+    str: The JSON response string.
+    """
     try:
         # Constructing the API link with the provided API key and location
         complete_api_link = f"https://api.openweathermap.org/data/2.5/weather?q={location}&appid={api_key}"
@@ -23,25 +33,34 @@ def fetch_weather(api_key, location):
         return None
 
 
-# Function to write weather information to a text file
-def write_to_file(location, weather_data):
+def write_to_file(weather_data, temperature_unit):
+    """
+    Function to write weather information to a text file.
+
+    Parameters:
+    weather_data (str): The JSON API response string.
+    temperature_unit (str): 'C' for Celsius, 'F' for Fahrenheit.
+    """
+
     try:
         # Opening the file "weatherinfo.txt" in write mode
         with open("weatherinfo.txt", "w+") as f:
             # Getting the current date and time
             date_time = datetime.now().strftime("%d %b %Y | %I:%M:%S %p")
 
             # Writing header information to the file
-            f.write("-------------------------------------------------------------\n")
-            f.write(f"Weather Stats for - {location.upper()}  || {date_time}\n")
-            f.write("-------------------------------------------------------------\n")
+            if "name" in weather_data and "sys" in weather_data and "country" in weather_data["sys"]:
+                f.write("-------------------------------------------------------------\n")
+                f.write(f"Weather Stats for - {weather_data['name']} | {weather_data['sys']['country']} "
+                        f"| {date_time}\n")
+                f.write("-------------------------------------------------------------\n")
 
             # Writing temperature information to the file
             if "main" in weather_data and "temp" in weather_data["main"]:
                 f.write(
-                    "\tCurrent temperature is : {:.2f} °C\n".format(
-                        weather_data["main"]["temp"] - 273.15
-                    )
+                    "\tCurrent temperature is : "
+                    + convert_temperature(weather_data["main"]["temp"], temperature_unit)
+                    + "\n"
                 )
 
             # Writing weather description information to the file
@@ -68,6 +87,24 @@ def write_to_file(location, weather_data):
                     )
                 )
 
+            # Writing wind direction information to the file
+            if "wind" in weather_data and "deg" in weather_data["wind"]:
+                f.write(
+                    "\tCurrent wind direction : " +
+                    wind_degree_to_direction(weather_data["wind"]["deg"]) + " \n")
+
+            # Writing sunrise local time to the file
+            if "sys" in weather_data and "sunrise" in weather_data["sys"] and "timezone" in weather_data:
+                f.write(
+                    "\tToday's sunrise time   : " +
+                    unix_timestamp_to_localtime(weather_data["sys"]["sunrise"], weather_data["timezone"]) + " \n")
+
+            # Writing sunset local time to the file
+            if "sys" in weather_data and "sunset" in weather_data["sys"] and "timezone" in weather_data:
+                f.write(
+                    "\tToday's sunset time    : " +
+                    unix_timestamp_to_localtime(weather_data["sys"]["sunset"], weather_data["timezone"]) + " \n")
+
         # Printing confirmation message after writing to file
         print("Weather information written to weatherinfo.txt")
 
@@ -76,36 +113,59 @@ def write_to_file(location, weather_data):
         print("Error writing to file:", e)
 
 
-# Main function
 def main():
+    """
+    Main function.
+    """
     # Printing welcome messages and instructions
     print("Welcome to the Weather Information App!")
     print("You need an API key to access weather data from OpenWeatherMap.")
     print(
         "You can obtain your API key by signing up at https://home.openweathermap.org/users/sign_up"
     )
 
-    # Prompting the user to input API key and city name
+    # Prompting the user to input API key, city name, and temperature unit
     api_key = input("Please enter your OpenWeatherMap API key: ")
     location = input("Enter the city name: ")
+    temperature_unit = input("Enter the temperature unit. 'C' for Celsius and 'F' for Fahrenheit: ")
+
+    if not (temperature_unit.upper() == "C" or temperature_unit.upper() == "F"):
+        print("Temperature unit must either be 'C' or be 'F'.")
+        return
 
     # Fetching weather data using the provided API key and location
     weather_data = fetch_weather(api_key, location)
 
     # Checking if weather data was successfully fetched
     if weather_data:
+        # Checking if the API key is invalid
+        if weather_data["cod"] == "401":
+            print("Invalid API key.")
+            return
+
+        # Checking if the city is not found
+        if weather_data["cod"] == "404":
+            print("City not found.")
+            return
+
         # Writing weather information to file
-        write_to_file(location, weather_data)
+        write_to_file(weather_data, temperature_unit)
 
         # Printing weather information to console
+        print("Current City          : " + weather_data['name'] + ', ' +
+              weather_data['sys']['country'])
         print(
-            "Current temperature is: {:.2f} °C".format(
-                weather_data["main"]["temp"] - 273.15
-            )
+            "Current temperature is: "
+            + convert_temperature(weather_data["main"]["temp"], temperature_unit)
         )
         print("Current weather desc  : " + weather_data["weather"][0]["description"])
         print("Current Humidity      :", weather_data["main"]["humidity"], "%")
         print("Current wind speed    :", weather_data["wind"]["speed"], "kmph")
+        print("Current wind direction:", wind_degree_to_direction(weather_data["wind"]["deg"]))
+        print("Today's sunrise time  :",
+              unix_timestamp_to_localtime(weather_data["sys"]["sunrise"], weather_data["timezone"]))
+        print("Today's sunset time   :",
+              unix_timestamp_to_localtime(weather_data["sys"]["sunset"], weather_data["timezone"]))
     else:
         # Printing error message if weather data fetching fails
         print("Failed to fetch weather data. Please check your input and try again.")

projects/API Based Weather Report/Util_Functions.py

@@ -0,0 +1,93 @@
+from datetime import datetime, timedelta
+
+
+def wind_degree_to_direction(str_wind_degree):
+    """
+    Convert wind degree to wind direction.
+
+    Parameters:
+    str_wind_degree (str): Wind degree from API (0 to 360)
+
+    Returns:
+    str: Wind direction (e.g., N, NE, E, etc.)
+         Or message "API Wind Degree data format error!"
+    """
+    # convert wind degree from str to int.
+    try:
+        wind_degree = int(str_wind_degree)
+    except ValueError:
+        return "API Wind Degree data format error!"
+
+    directions = [
+        "N", "NNE", "NE", "ENE", "E", "ESE", "SE", "SSE",
+        "S", "SSW", "SW", "WSW", "W", "WNW", "NW", "NNW"
+    ]
+    index = int((wind_degree + 11.25) // 22.5) % 16
+    return directions[index]
+
+
+def unix_timestamp_to_localtime(str_unix_timestamp, str_timezone_offset_seconds):
+    """
+    Convert unix timestamp to localtime (for sunrise and sunset).
+
+    Parameters:
+    str_unix_timestamp (str): Unix timestamp (e.g., "1717715516")
+    str_timezone_offset_seconds (str): timezone offset in second (e.g., "28800" represents UTC+8)
+
+    Returns:
+    str: local_time (e.g., "2024-06-07 07:11:56")
+         Or message "API sunset/sunrise data format error!"
+         Or message "API timezone data format error!"
+    """
+    # Convert strings to integers
+    try:
+        unix_timestamp = int(str_unix_timestamp)
+    except ValueError:
+        return "API sunset/sunrise data format error!"
+
+    try:
+        timezone_offset_seconds = int(str_timezone_offset_seconds)
+    except ValueError:
+        return "API timezone data format error!"
+
+    # Convert Unix timestamp to UTC datetime
+    utc_time = datetime.utcfromtimestamp(unix_timestamp)
+
+    # Apply timezone offset
+    local_time = utc_time + timedelta(seconds=timezone_offset_seconds)
+
+    return local_time.strftime('%Y-%m-%d %H:%M:%S')
+
+
+def convert_temperature(str_temperature_kelvin, temperature_unit):
+    """
+    Convert temperature in Kelvin degree to Celsius degree or Fahrenheit degree based on second parameter .
+
+    Parameters:
+    str_temperature_kelvin (str): temperature in Kelvin degree (e.g., "291.19")
+    temperature_unit (str): "C" for Celsius, "F" for Fahrenheit
+
+    Returns:
+    str: temperature (e.g., "21.07 °C" or "67.12 °F")
+         Or message "API temperature data format error!"
+         Or message "Temperature unit must either be 'C' or be 'F'!"
+    """
+    # Convert strings to integers
+    try:
+        temperature_k = float(str_temperature_kelvin)
+    except ValueError:
+        return "API temperature data format error!"
+
+    # Validate temperature_unit
+    unit = str(temperature_unit).upper()
+    if not (unit == "C" or unit == "F"):
+        return "Temperature unit must either be 'C' or be 'F'!"
+
+    # Converting
+    if unit == 'C':
+        temperature_c = temperature_k - 273.15
+        return f"{temperature_c:.2f} °C"
+
+    if unit == 'F':
+        temperature_f = temperature_k * 9 / 5 - 459.67
+        return f"{temperature_f:.2f} °F"

projects/API Based Weather Report/test_Util_Functions.py

@@ -0,0 +1,45 @@
+import unittest
+from Util_Functions import wind_degree_to_direction, unix_timestamp_to_localtime, convert_temperature
+
+
+class MyTestCase(unittest.TestCase):
+    def test_wind_degree_to_direction(self):
+        self.assertEqual("ENE", wind_degree_to_direction("60"))
+        self.assertEqual("SE", wind_degree_to_direction("130"))
+        self.assertEqual("W", wind_degree_to_direction("280"))
+
+    def test_wind_degree_to_direction_parameter_format_error(self):
+        self.assertEqual("API Wind Degree data format error!",
+                         wind_degree_to_direction("abc"))
+
+    def test_unix_timestamp_to_localtime(self):
+        self.assertEqual("2024-06-07 07:11:56",
+                         unix_timestamp_to_localtime("1717715516", "28800"))
+
+    def test_unix_timestamp_to_localtime_unix_timestamp_format_error(self):
+        self.assertEqual("API sunset/sunrise data format error!",
+                         unix_timestamp_to_localtime("abc", "28800"))
+
+    def test_unix_timestamp_to_localtime_timezone_format_error(self):
+        self.assertEqual("API timezone data format error!",
+                         unix_timestamp_to_localtime("1717715516", "abc"))
+
+    def test_convert_temperature_to_celsius(self):
+        self.assertEqual("15.44 °C",
+                         convert_temperature("288.59", "C"))
+
+    def test_convert_temperature_to_fahrenheit(self):
+        self.assertEqual("59.79 °F",
+                         convert_temperature("288.59", "F"))
+
+    def test_convert_temperature_temperature_format_error(self):
+        self.assertEqual("API temperature data format error!",
+                         convert_temperature("abc", "F"))
+
+    def test_convert_temperature_temperature_unit_error(self):
+        self.assertEqual("Temperature unit must either be 'C' or be 'F'!",
+                         convert_temperature("288.59", "H"))
+
+
+if __name__ == '__main__':
+    unittest.main()