environment/lib/python2.7/site-packages/IPython/external/pexpect/_pexpect.py
def expect(self, pattern, timeout = -1, searchwindowsize=-1):

        """This seeks through the stream until a pattern is matched. The
        pattern is overloaded and may take several types. The pattern can be a
        StringType, EOF, a compiled re, or a list of any of those types.
        Strings will be compiled to re types. This returns the index into the
        pattern list. If the pattern was not a list this returns index 0 on a
        successful match. This may raise exceptions for EOF or TIMEOUT. To
        avoid the EOF or TIMEOUT exceptions add EOF or TIMEOUT to the pattern
        list. That will cause expect to match an EOF or TIMEOUT condition
        instead of raising an exception.

        If you pass a list of patterns and more than one matches, the first match
        in the stream is chosen. If more than one pattern matches at that point,
        the leftmost in the pattern list is chosen. For example::

            # the input is 'foobar'
            index = p.expect (['bar', 'foo', 'foobar'])
            # returns 1 ('foo') even though 'foobar' is a "better" match

        Please note, however, that buffering can affect this behavior, since
        input arrives in unpredictable chunks. For example::

            # the input is 'foobar'
            index = p.expect (['foobar', 'foo'])
            # returns 0 ('foobar') if all input is available at once,
            # but returs 1 ('foo') if parts of the final 'bar' arrive late

        After a match is found the instance attributes 'before', 'after' and
        'match' will be set. You can see all the data read before the match in
        'before'. You can see the data that was matched in 'after'. The
        re.MatchObject used in the re match will be in 'match'. If an error
        occurred then 'before' will be set to all the data read so far and
        'after' and 'match' will be None.

        If timeout is -1 then timeout will be set to the self.timeout value.

        A list entry may be EOF or TIMEOUT instead of a string. This will
        catch these exceptions and return the index of the list entry instead
        of raising the exception. The attribute 'after' will be set to the
        exception type. The attribute 'match' will be None. This allows you to
        write code like this::

                index = p.expect (['good', 'bad', pexpect.EOF, pexpect.TIMEOUT])
                if index == 0:
                    do_something()
                elif index == 1:
                    do_something_else()
                elif index == 2:
                    do_some_other_thing()
                elif index == 3:
                    do_something_completely_different()

        instead of code like this::

                try:
                    index = p.expect (['good', 'bad'])
                    if index == 0:
                        do_something()
                    elif index == 1:
                        do_something_else()
                except EOF:
                    do_some_other_thing()
                except TIMEOUT:
                    do_something_completely_different()

        These two forms are equivalent. It all depends on what you want. You
        can also just expect the EOF if you are waiting for all output of a
        child to finish. For example::

                p = pexpect.spawn('/bin/ls')
                p.expect (pexpect.EOF)
                print p.before

        If you are trying to optimize for speed then see expect_list().
        """

        compiled_pattern_list = self.compile_pattern_list(pattern)
        return self.expect_list(compiled_pattern_list, timeout, searchwindowsize)
def expect(self, pattern, timeout = -1, searchwindowsize=-1):

        compiled_pattern_list = self.compile_pattern_list(pattern)
        return self.expect_list(compiled_pattern_list, timeout, searchwindowsize)
def expect ( self , pattern , timeout = - 1 , searchwindowsize = - 1 ) : compiled_pattern_list = self . compile_pattern_list ( pattern ) return self . expect_list ( compiled_pattern_list , timeout , searchwindowsize )
This seeks through the stream until a pattern is matched. The
        pattern is overloaded and may take several types. The pattern can be a
        StringType, EOF, a compiled re, or a list of any of those types.
        Strings will be compiled to re types. This returns the index into the
        pattern list. If the pattern was not a list this returns index 0 on a
        successful match. This may raise exceptions for EOF or TIMEOUT. To
        avoid the EOF or TIMEOUT exceptions add EOF or TIMEOUT to the pattern
        list. That will cause expect to match an EOF or TIMEOUT condition
        instead of raising an exception.

        If you pass a list of patterns and more than one matches, the first match
        in the stream is chosen. If more than one pattern matches at that point,
        the leftmost in the pattern list is chosen. For example::

            # the input is 'foobar'
            index = p.expect (['bar', 'foo', 'foobar'])
            # returns 1 ('foo') even though 'foobar' is a "better" match

        Please note, however, that buffering can affect this behavior, since
        input arrives in unpredictable chunks. For example::

            # the input is 'foobar'
            index = p.expect (['foobar', 'foo'])
            # returns 0 ('foobar') if all input is available at once,
            # but returs 1 ('foo') if parts of the final 'bar' arrive late

        After a match is found the instance attributes 'before', 'after' and
        'match' will be set. You can see all the data read before the match in
        'before'. You can see the data that was matched in 'after'. The
        re.MatchObject used in the re match will be in 'match'. If an error
        occurred then 'before' will be set to all the data read so far and
        'after' and 'match' will be None.

        If timeout is -1 then timeout will be set to the self.timeout value.

        A list entry may be EOF or TIMEOUT instead of a string. This will
        catch these exceptions and return the index of the list entry instead
        of raising the exception. The attribute 'after' will be set to the
        exception type. The attribute 'match' will be None. This allows you to
        write code like this::

                index = p.expect (['good', 'bad', pexpect.EOF, pexpect.TIMEOUT])
                if index == 0:
                    do_something()
                elif index == 1:
                    do_something_else()
                elif index == 2:
                    do_some_other_thing()
                elif index == 3:
                    do_something_completely_different()

        instead of code like this::

                try:
                    index = p.expect (['good', 'bad'])
                    if index == 0:
                        do_something()
                    elif index == 1:
                        do_something_else()
                except EOF:
                    do_some_other_thing()
                except TIMEOUT:
                    do_something_completely_different()

        These two forms are equivalent. It all depends on what you want. You
        can also just expect the EOF if you are waiting for all output of a
        child to finish. For example::

                p = pexpect.spawn('/bin/ls')
                p.expect (pexpect.EOF)
                print p.before

        If you are trying to optimize for speed then see expect_list().
This seeks through the stream until a pattern is matched . The pattern is overloaded and may take several types . The pattern can be a StringType EOF a compiled re or a list of any of those types . Strings will be compiled to re types . This returns the index into the pattern list . If the pattern was not a list this returns index 0 on a successful match . This may raise exceptions for EOF or TIMEOUT . To avoid the EOF or TIMEOUT exceptions add EOF or TIMEOUT to the pattern list . That will cause expect to match an EOF or TIMEOUT condition instead of raising an exception .