Python 列表解析 字典解析

from random import randint

range_num = [ randint(-10,10) for _ in range(10) ]

number = [ i for i in range_num if i >= 0 ]

print(number)

# filter 函数
number = filter(lambda x : x >= 0 ,range_num)
print(list(number))

OR

number = list(filter(lambda x : x >= 0 ,range_num))
print(number)

from random import randint

range_num = { 'students-{}'.format(i):randint(50,100) for i in range(10) }
number = { k:v for k, v in range_num.items() if v >= 80 }
print(number)

#filter
number = filter(lambda x: x[1] >= 90 , range_num.items())
print(dict(number))
or

number = dict(filter(lambda x: x[1] >= 90 , range_num.items()))
print(number)