int一下s
或者eval
你把代码复制出来呗
# 已知字符串pi = 3.141592653589793 ,请统计各数字出现的次数,并按升序打印输出。
pi = 3.141592653589793
num_dict = ____1____
for s in pi:
# 判断 s 是否为数字0-9
if ____2____
if s in num_dict:
____3____
else:
num_dict[s] = 1
# 对字典按键排序
num_list = ____4____
print( 数字\t\t出现次数 )
for num in num_list:
print( {}\t\t{}次 .format(____5____))
你的源码是怎样的?
pi = 3.141592653589793
num_dict = {}
for s in pi:
if s in 0 1 2 3 4 5 6 7 8 9 :
if s in num_dict:
num_dict[s] += 1
else:
num_dict[s] = 1
num_list = list(num_dict)
print( 数字\t\t出现次数 )
for num in num_list:
print( {}\t\t{}次 .format(num,num_dict[num]))6,多谢