# (1) Specify the file server that supports the following format. # sftp://[username[:password]@]hostname[:port] # (2) Do not add a trailing slash at the end of the file server path. FILE_SERVER = 'sftp://sftp_user:sftp_pwd@10.1.3.2' # TIME_SN is a string consisting of the...
所有HTTP 客户端示例现在都使用新的HTTPX库,提供同步和异步 API。 在“带有进度显示和错误处理的下载”实验的设置现在更简单了,这要归功于 Python 3.7 中添加到http.server包中的多线程服务器。以前,标准库只有单线程的BaseHttpServer,不适合用于并发客户端的实验,因此我不得不在本书第一版中使用外部工具。 “使...
_con, name) else: raise InvalidConnection def __del__(self): """Delete the pooled connection.""" try: self.close() except Exception: passclass SharedDBConnection: """Auxiliary class for shared connections.""" def __init__(self, con): """Create a shared connection. con: the ...
如果想要在python2.7中使用:print('error happens!', file=sys.stderr)这样的语句,就需写上“ from __future__ import print_function” 基于早期Python版本而能正常运行于Python 2.7并无警告的程序可以通过一个2 to 3的转换工具无缝迁移到Python 3.0。 部分函数和语句的改变 最引人注意的改变是print语句没有了...
defsave_flag(img:bytes,filename:str)->None:#⑤(DEST_DIR/filename).write_bytes(img)defget_flag(cc:str)->bytes:# ⑥ url=f'{BASE_URL}/{cc}/{cc}.gif'.lower()resp=httpx.get(url,timeout=6.1,# ⑦ follow_redirects=True)# ⑧
Location in the returned results contains SuccessActionRedirect as well as the bucket name, object name, and object ETag. If the value is invalid, OBS ignores this parameter. In such case, Location in the returned results indicates the object address, and OBS returns a status code based on ...
if __name__ == '__main__': unittest.main() This code pattern allows the testing suite to be run by test.regrtest, on its own as a script that supports the unittest CLI, or via the python -m unittest CLI. The goal for regression testing is to try to break code. This leads ...
filename=os.environ.get('PYTHONSTARTUP') iffilenameandos.path.isfile(filename): execfile(filename) 访问/权限 access() 检验权限模式 chmod() 改变权限模式 chown()/lchown() 改变 owner 和 group ID/功能相同, 但不会跟踪链接 umask() 设置默认权限模式 ...
An event is a simple synchronization object;the event represents an internal flag, and threads can wait for the flag to be set, or set or clear the flag themselves. event = threading.Event()# a client thread can wait for the flag to be setevent.wait()# a server thread can set or ...
vars are returned. Otherwise, return fetch specified result. batch: batch data or not, False default.If batch is False, a new dimension is added to header of the shape[np.newaxis]. log_id: for logging Returns: fetch_map: dict """ if feed is None: raise ValueError("You shoul...