Celsius to Fahrenheit Conversions

conversions/celsius_to_fahrenheit.py

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+""" Convert temperature from Celsius to Fahrenheit """
+
+
+def celsius_to_fahrenheit(celsius: float) -> float:
+    """
+    Convert a given value from Celsius to Fahrenheit and round it to 2 decimal places.
+
+    >>> print(celsius_to_fahrenheit(-40))
+    -40.0
+    >>> print(celsius_to_fahrenheit(-20))
+    -4.0
+    >>> print(celsius_to_fahrenheit(0))
+    32.0
+    >>> print(celsius_to_fahrenheit(20))
+    68.0
+    >>> print(celsius_to_fahrenheit(40))
+    104.0
+    >>> print(celsius_to_fahrenheit("celsius"))
+    Traceback (most recent call last):
+    ...
+    ValueError: could not convert string to float: 'celsius'
+    """
+
+    celsius = float(celsius)
+    return round((celsius * 9 / 5) + 32, 2)
+
+
+if __name__ == "__main__":
+    import doctest
+    doctest.testmod()

conversions/fahrenheit_to_celsius.py

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+""" Convert temperature from Fahrenheit to Celsius """
+
+
+def fahrenheit_to_celsius(fahrenheit: float) -> float:
+    """
+    Convert a given value from Fahrenheit to Celsius and round it to 2 decimal places.
+
+    >>> print(fahrenheit_to_celsius(0))
+    -17.78
+    >>> print(fahrenheit_to_celsius(20))
+    -6.67
+    >>> print(fahrenheit_to_celsius(40))
+    4.44
+    >>> print(fahrenheit_to_celsius(60))
+    15.56
+    >>> print(fahrenheit_to_celsius(80))
+    26.67
+    >>> print(fahrenheit_to_celsius(100))
+    37.78
+    >>> print(fahrenheit_to_celsius("fahrenheit"))
+    Traceback (most recent call last):
+    ...
+    ValueError: could not convert string to float: 'fahrenheit'
+    """
+    fahrenheit = float(fahrenheit)
+    return round((fahrenheit - 32) * 5 / 9, 2)
+
+
+if __name__ == "__main__":
+    import doctest
+    doctest.testmod()