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dict_comprehensions.py
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dict_comprehensions.py
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import random
def run():
# Completo diccionario en varias lineas:
dict = {}
for i in range(1,11):
dict[i] = i * 2 # La primera parte agrega la key y la segunda el value
print(dict)
# Con dict comprehensions:
dict_2 = { i : i * 2 for i in range(1, 5) }
print(dict_2)
# Otra ejemplo:
countries = ['col','mex','bol','pe']
population = {}
for country in countries:
population[country] = random.randint(20000000, 100000000)
print(population)
# Itero un diccionario e imprimo por par clave valor.
for country, people in population.items():
print(country, " = ", people )
# Puedo crear el mismo dict population con dict comprehensions así:
population = { country : random.randint(20000000, 100000000) for country in countries }
print(population)
for country, people in population.items():
print(country, " = ", people )
# Challenge: Armar un diccionario iterando dos listas:
names = ["nico", "zule", "santi"]
ages = [12, 56, 68]
myDict = {}
for i in range(len(names)):
myDict[names[i]] = ages[i]
print(myDict)
## Ahora con dict comprehensions:
myDict = { names[i] : ages[i] for i in range(len(names)) }
print(myDict)
# Unimos usando zip
print(list(zip(names,ages)))
myDict = {}
for name, age in zip(names, ages):
myDict[name] = age
print("Dict armado con zip: ")
print(myDict)
myDict = { name : age for name, age in zip(names, ages)}
print(myDict)
if __name__ == '__main__':
run()