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Editorial Team
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Asked: 2026-06-06T15:58:35+00:00

Many different representation of parameters in python such as : urllib2.urlopen(url[, data][, timeout]) urllib2.build_opener([handler,

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Many different representation of parameters in python such as :

urllib2.urlopen(url[, data][, timeout])

urllib2.build_opener([handler, ...])

cookielib.MozillaCookieJar(filename, delayload=None, policy=None)


urllib2.urlopen(url[, data][, timeout])

and

urllib2.urlopen(url,data,timeout)

Does the first one means all the url ,data and timeout can be passed as list?

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1 Answer

  1. Editorial Team

    I know that the parameter in second method is a list

    This is incorrect. Square brackets in command/function documentation denote optional parameters. Note that in Python order of parameters does matter, so you’ll need to use keyword arguments to omit parameters in the middle.

    urllib2.urlopen(someurl, somedata, sometimeout)
urllib2.urlopen(someurl)
urllib2.urlopen(someurl, somedata)
urllib2.urlopen(someurl, timeout=sometimeout)

urllib2.build_opener()
urllib2.build_opener(handler1)
urllib2.build_opener(handler1, handler2)
urllib2.build_opener(handler1, handler2, handler3)
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