AIOFileOpen

摘要

打开支持上下文管理器协议的本地或云文件句柄。

语法

AIOFileOpen (path, {mode}, {encoding}, {mime})

参数	说明	数据类型
path	The relative path from the current working directory or an absolute path (absolute vsi path for cloud).	String
mode	Specifies the mode that will be used for opening a file. r—The file will be opened in read mode. w—The file will be opened in write mode rb—The file will be opened in binary format for reading. wb—The file will be opened in binary format for writing 注： Only read mode honors the encoding parameter. (默认值为 'r')	String
encoding	Specifies the encoding that will be used to open a file. utf-8—UTF-8 encoding will be used. This is the default. utf-16—UTF-16 encoding will be used. ascii—ASCII encoding will be used. (默认值为 'utf-8')	String
mime	The Multipurpose Internet Mail Extensions (MIME) headers. For faster creation and setting of metadata, set MIME headers when creating the file. (默认值为 None)	Dictionary

返回值

数据类型	说明
Object	以 AIOFile 对象形式返回文件句柄。

代码示例

# For opening a file in the cloud store
with AIOFileOpen(r"C:\data\datacloud.acs\datafile.txt", 'r') as rcsfile:
    rcsfile.seek(5)
    rcsfile.tell()
    print(rcsfile.read(4))

# For opening a local file
with AIOFileOpen(r"C:\data\datafile.txt", 'r') as rcsfile:
    rcsfile.seek(5)
    rcsfile.tell()
    print(rcsfile.read(4))