空格替换，并且计算字符串长度

#方法1 使用函数
def lenth1(lists):
    lists=lists.replace(" ","%20")
    # print(lists)
    return lists,len(lists)

list1 = "Besttest andashu"
b=lenth1(list1)
# print(list1)
print(b)

# 使用for循环
def replace(s):
    b=''
    for i in range(len(s)):
        if s[i] ==" ":
            b +="%20"
        else:
            b +=s[i]
    return b,len(b)

s="Besttest andashu"
# print(len(s))
print(replace(s))