journal of python(14) －－dive into python

3.8. Summary

小结

The odbchelper.py program and its output should now make perfect sense.

程序odbchelper以及它的输出你应该都明白了

 

def buildConnectionString(params):
    """Build a connection string from a dictionary of parameters.

    Returns string."""
    return ";".join(["%s=%s" % (k, v) for k, v in params.items()])

if __name__ == "__main__":
    myParams = {"server":"mpilgrim", \
                "database":"master", \
                "uid":"sa", \
                "pwd":"secret" \
                }
  print buildConnectionString(myParams)

 

Here is the output of odbchelper.py:

这是程序的输出：

server=mpilgrim;uid=sa;database=master;pwd=secret

Before diving into the next chapter, make sure you're comfortable doing all of these things:

再继续深入下一章之前，首先确定你自己可以轻松的完成下面的事情：

• Using the Python IDE to test expressions interactively
• 可以交互的在Python IDE中测试表达式
• Writing Python programs and running them from within your IDE, or from the command line
• 写一个Python程序，要么在你的IDE运行，要么在命令行运行
• Importing modules and calling their functions
• 能导入模块并可以调用函数
• Declaring functions and using doc strings, local variables, and proper indentation
• 声明函数，并使用文档化字符串（函数注释），局部变量以及适当的缩进。
• Defining dictionaries, tuples, and lists
• 定义字典，tuple以及列表
• Accessing attributes and methods of any object, including strings, lists, dictionaries, functions, and modules
• 能够访问任意对象的属性和方法，如字符处啊，列表，字典，函数，模块
• Concatenating values through string formatting
• 通过格式化字符串来连接字符串
• Mapping lists into other lists using list comprehensions
• 通过列表复合操作能将一个列表映射成其它列表
• Splitting strings into lists and joining lists into strings
• 字符串可以分割成列表，同时join将列表连接成字符串