串的处理

代码

s = input().split()
l_new = []
for i in s:
    i = list(i)
    new=""
    for j in range(len(i)-1): # 遍历
        new+=i[j]
        if i[j].isdigit() and i[j+1].isalpha(): # 在字母和数字之间添加“_”
        	new+='_'
        if i[j].isalpha() and i[j+1].isdigit(): # 同上
        	new+='_'
    new+=i[-1]
    l_new.append(new)
s_new = " ".join([i[0].upper()+i[1:] for i in l_new]) # 将处理好的字符串赋给s_new
print(s_new)