added conversions between celsius and fahrenheit

conversions/celsius_fahrenheit_conversion.py

@@ -0,0 +1,34 @@
+""" Convert temparature from Celsius to Fahrenheit """
+
+def celsius_to_fahrenheit(celsius):
+    """
+    Convert a given value from Celsius to Fahrenheit 
+
+    >>> celsius_to_fahrenheit(-40)
+    -40.0
+    >>> celsius_to_fahrenheit(-20)
+    -4.0
+    >>> celsius_to_fahrenheit(0)
+    32.0
+    >>> celsius_to_fahrenheit(20)
+    68.0
+    >>> celsius_to_fahrenheit(40)
+    104.0
+    >>> celsius_to_fahrenheit("40")
+    Traceback (most recent call last):
+    ...
+    TypeError: 'str' object cannot be interpreted as integer
+    """
+
+    if type(celsius) == str:
+        """
+        Check whether given value is string and raise Type Error
+        """
+        raise TypeError("'str' object cannot be interpreted as integer")
+
+    fahrenheit = (celsius * 9/5) + 32 # value converted from celsius to fahrenheit
+    print(fahrenheit)
+
+if __name__ == "__main__":
+    import doctest
+    doctest.testmod()

conversions/fahrenheit_to_celsius.py

@@ -0,0 +1,38 @@
+""" Convert temparature from Fahrenheit to Celsius """
+
+def fahrenheit_to_celsius(fahrenheit):
+    """
+    Convert a given value from Fahrenheit to Celsius and round it to 2 d.p.
+
+    >>> fahrenheit_to_celsius(0)
+    -17.78
+    >>> fahrenheit_to_celsius(20)
+    -6.67
+    >>> fahrenheit_to_celsius(40)
+    4.44
+    >>> fahrenheit_to_celsius(60)
+    15.56
+    >>> fahrenheit_to_celsius(80)
+    26.67
+    >>> fahrenheit_to_celsius(100)
+    37.78
+    >>> fahrenheit_to_celsius("100")
+    Traceback (most recent call last):
+    ...
+    TypeError: 'str' object cannot be interpreted as integer
+    """
+    if type(fahrenheit) == str:
+        """
+        Check whether given value is string and raise Type Error
+        """
+        raise TypeError("'str' object cannot be interpreted as integer") 
+
+
+    celsius = (fahrenheit - 32)*5/9 # value converted from fahrenheit to celsius
+    celsius = round(celsius, 2) # converted (celsius) value is rounded to two decimal places
+    print(celsius)
+
+if __name__ == "__main__":
+    import doctest
+    doctest.testmod()
+