一些模块¶
Celery¶
Distributed Task Queue
Celery is a simple, flexible, and reliable distributed system to process vast amounts of messages, while providing operations with the tools required to maintain such a system.
It’s a task queue with focus on real-time processing, while also supporting task scheduling.
Celery has a large and diverse community of users and contributors, you should come join us on IRC or our mailing-list.
Celery is Open Source and licensed under the BSD License.
Pexpect¶
Pexpect allows easy control of interactive console applications.
https://github.com/pexpect/pexpect
Pexpect makes Python a better tool for controlling other applications.
Pexpect is a pure Python module for spawning child applications; controlling them; and responding to expected patterns in their output. Pexpect works like Don Libes’ Expect. Pexpect allows your script to spawn a child application and control it as if a human were typing commands.
subprocess¶
Subprocess management
`subprocess <https://docs.python.org/3.5/library/subprocess.html#module-subprocess>`__
The subprocess module allows you to spawn new processes, connect to their input/output/error pipes, and obtain their return codes. This module intends to replace several older modules and functions:
inspect¶
__future__¶
Python提供了__future__模块，把下一个新版本的特性导入到当前版本，于是我们就可以在当前版本中测试一些新版本的特性。
Excel¶
在处理excel数据时发现了xlwt的局限性–不能写入超过65535行、256列的数据（因为它只支持Excel 2003及之前的版本，在这些版本的Excel中行数和列数有此限制），这对于实际应用还是不够的。
openpyxl支持07/10/13版本Excel的, 功能很强大, 但是操作起来感觉没有xlwt方便.
- 读取Excel时，选择openpyxl和xlrd 都能满足需求.
- 写入少量数据且存为xls格式文件时, 用xlwt更方便.
- 写入大量数据（超过xls格式限制）或者必须存为xlsx格式文件时，使用openpyxl了.
xlrd¶
读写Excel, 但是写操作会有一些问题. 用xlrd进行读取比较方便, 流程和平时都手操作Excel一样, 打开工作簿(Workbook), 选择工作表(sheets), 然后操作单元格(cell)