By the configuration file variable exposed to the user to modify
Standard library modules configparser, enabling the use of a standard format in the configuration file.
You must be used [files], [colors] The title like profile into sections (section). The name of the title can be easily specified, but they must be enclosed in square brackets.
$ cat area.ini
[numbers]
pi: 3.1415926535893971
[messages]
greeting: Welcome to the area calutation program!
question: plse enter the radius
result_message: The area is
He read using python
from configparser import ConfigParser
CONFIGFILE = "area.ini"
config = ConfigParser()
#读取配置文件
config.read(CONFIGFILE)
print(config['messages'].get('greeting'))
radius = float(input(config['messages'].get('question') + ' '))
# 以空格结束以便接着在当前行打印：
print(config['messages'].get('result_message'),end=' ')
print(config['numbers'].getfloat('pi') * radius**2)
Configuration or control the following three sources of information, where the order should you query these sources, so that the latter covering the front of the source of sources:
1, the profile
2, the environment variable
3, the command line and passed to the program switches parameters: command line parameters to be processed, may be used as the sys.argv; switch to be processed (option), the module should be used argparse