Python dictionary comprehension

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Python dictionary comprehension tutorial example explained

#python #dictionary #comprehension

# -------------------------------------------------------------------------
# dictionary comprehension = create dictionaries using an expression
# can replace for loops and certain lambda functions
#
# dictionary = {key: expression for (key,value) in iterable}
# dictionary = {key: expression for (key,value) in iterable if conditional}
# dictionary = {key: (if/else) for (key,value) in iterable}
# dictionary = {key: function(value) for (key,value) in iterable}
# -------------------------------------------------------------------------
cities_in_F = {'New York': 32, 'Boston': 75, 'Los Angeles': 100, 'Chicago': 50}
cities_in_C = {key: round((value-32)*(5/9)) for (key,value) in cities_in_F.items()}
print(cities_in_C)

# -------------------------------------------------------------------------
# weather = {'New York': "snowing", 'Boston': "sunny", 'Los Angeles': "sunny", 'Chicago': "cloudy"}
# sunny_weather = {key: value for (key,value) in weather.items() if value == "sunny"}
# print(sunny_weather)

# -------------------------------------------------------------------------

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