2017-12-02 12:36:35 December Saturday the 48 week, the 336 day
#原创第13篇~while循环
#普通while
num = 1 #num is number
while num <= 3: #while执行后面语句块print(num) #每次循环让num加1num += 1 #等价于num = num +1
2017-12-02 12:3
Counter 常规写法: #统计词频
colors = ['red', 'blue', 'red', 'green', 'blue', 'blue']
result = {}
for color in colors:if result.get(color)==None:result[color]=1else:result[color]