Python 在字符串中查找数字，添加1并替换

我需要编写一个代码，其中一个字符串包含一个数字，然后这个数字递增1，然后在初始字符串输入中打印出来

应该是这样的

>>>addNumber('I slept 3 hours')
what number would you like to increment? 3
I slept 4 hours
>>>addNumber('I have 366 friends on facebook')
what number would you like to increment? 6
I have 377 friends on facebook

到目前为止，我有这个，但我知道这是错误的，老实说，我不知道如何做到这一点

def incrementNumbers(statement):
    number1=(int(input('What number would you like to increment?')))
    number2 = number1 +1
    i=[]
    for numbers in statement:
        if numbers.isdigit():
            i.append(numbers)
            statement.replace(numbers,number2)

你可以在这里用

另一个例子

>>> s = 'I slept 3 hours'
>>> i = raw_input('what number would you like to increment?')
what number would you like to increment?3
>>> re.sub('({})'.format(i),addone,s)
'I slept 4 hours'

你可以像这样定义你的函数

def addNumber(s):
    def addone(obj):
        val = int(obj.group(1))
        return str(val+1)

    i = raw_input('what number would you like to increment?')
    return(re.sub('({})'.format(i),addone,s))

但是，我建议您有一个验证功能

i = raw_input('what number would you like to increment?')
if 0<int(i)<9:
    return(re.sub('({})'.format(i),addone,s))
else:
    return "Number out of range"

i=raw\u输入（'您希望增加多少？'））
如果0根据您的要求，数值必须介于0和8之间，则可以使用

代码中可能存在的错误是：

您试图直接用
字符串中的
int
类型数据替换

此外，无论您指定要修改什么，仅检查
numbers.isdigit（）
将修改所有数字
为使代码正常运行，可能对代码进行的更正：

def incrementNumbers(statement):
    number1 = int(input('What number would you like to increment?'))
    number2 = number1 +1
    i=[]
    for numbers in statement:
        if numbers.isdigit() and int(numbers) == number1:
            i.append(numbers)
            statement.replace(numbers,str(number2))

您还可以将
incrementNumbers（语句）
函数更改为：

def incrementNumbers(statement):
    number1 = input('What number would you like to increment?')
    number2 = str(int(number1)+1)
    statement = statement.replace(number1,number2)
    return statement

我认为这比在
循环中使用
要好。
如果他们想在
399
中增加
9
该怎么办？我不认为它会被测试为9，它只显示一个正数字。所以它必须是0-89，既有正的也有单的。是的，但这是一个非常简单的类，所以我假设我们只需要从0到8的数字
def incrementNumbers(statement):
    number1 = int(input('What number would you like to increment?'))
    number2 = number1 +1
    i=[]
    for numbers in statement:
        if numbers.isdigit() and int(numbers) == number1:
            i.append(numbers)
            statement.replace(numbers,str(number2))

def incrementNumbers(statement):
    number1 = input('What number would you like to increment?')
    number2 = str(int(number1)+1)
    statement = statement.replace(number1,number2)
    return statement