Python返回一个字符串打印之后只有None

Question

请问为什么在函数内部打印Path就是找到的文件的绝对路径，用实参接受返回值打印出来就只有None了

import os


def searchFile(Path, File):
    allFile = os.listdir(Path)
    for eachFile in allFile:
        if os.path.isdir(Path + os.sep + eachFile):
            searchFile(Path + os.sep + eachFile, File)
        elif eachFile == File:
            return str(Path)


path = input('请输入待查找的初始目录:')
file = input('请输入需要查找的目标文件:')
print(searchFile(path, file))

Answer 1

def searchFile(Path, File):
    allFile = os.listdir(Path)
    for eachFile in allFile:
        if os.path.isdir(Path + os.sep + eachFile):
            return  searchFile(Path + os.sep + eachFile, File)
        elif eachFile == File:
            return str(Path)