Golang 检查文件是否存在

// 等价于Python's if not os.path.exists(filename)
if _, err := os.Stat("/path/to/whatever"); os.IsNotExist(err) {
  // path/to/whatever does not exist
}

// 等价于Python's if os.path.exists(filename)
if _, err := os.Stat("/path/to/whatever"); err == nil {
  // path/to/whatever exists
}

// 删除文件
func Remove(name string) error
Remove removes the named file or directory. If there is an error, it will be of type *PathError.

err := os.remove("./test.txt")
if err != nil {
    return
}

参考链接：Python-Golang-文件是否存在