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# Copyright (c) Twisted Matrix Laboratories.
# See LICENSE for details.
"""
This example demonstrates how to use downloadPage.
Usage:
$ python dlpage.py <url>
Don't forget the http:// when you type a URL!
"""
import sys
from twisted.internet import reactor
from twisted.python.util import println
from twisted.web.client import downloadPage
# The function downloads a page and saves it to a file, in this case, it saves
# the page to "foo".
url = sys.argv[1].encode("ascii")
downloadPage(url, "foo").addCallbacks(
lambda value: reactor.stop(),
lambda error: (println("an error occurred", error), reactor.stop()),
)
reactor.run()
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