这一错误的严格做法是:。 无论在什么地方,只要是,就可找到任何关于该词的澄清。 选择组+is+not+ Defin%22”rel=“nofollow noretinger”>google或stackover 。 +, 阅读optparse.py 插图 选择小组就是这样做的,从而加剧了混乱。
Python 2.6.1 (r261:67515, Feb 11 2010, 00:51:29)
>>> from optparse import OptionParser
>>> outputGroup = OptionGroup(parser, Output handling )
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
NameError: name OptionGroup is not defined
我必须用不到1分钟的时间来发现我的错误。
是的,这意味着我知道答案,但既然这么长,我就想在这里找到“文件”。
或许是another example ? ? 为什么 而不是从模块进入进口模块。
OptionGroup is defined in the module optparse.
The command
<编码>选择进口 备选案文Parser
将<代码>OptionParser in the global namespace,但完全忽视OptionGroup。
为确定该守则,进口<代码>optparse模块,并查阅其部分:
import optparse
parser = optparse.OptionParser()
outputGroup = optparse.OptionGroup(parser, Output handling )
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