python中str的特性

换行字符串

how_many_snakes = 1
snake_string = """
Welcome to Python3!

             ____
            / . .\\
            \  ---<
             \  /
   __________/ /
-=:___________/

<3, Juno
"""


print(snake_string * how_many_snakes)

format的格式化

a = .5
print(a)
print("a={}".format(a))
print("a={:2%}".format(a))

format与dict

dict = {'name': 'juno', 'color': 'blue', 'age': 'unknown'}
print(dict)
print("name={name}, color={color}, age={age}".format(**dict))