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d���r�|j |� q@| j|� q@W |S )a� This compiles a pattern-string or a list of pattern-strings.
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might do this if waiting for an EOF or TIMEOUT condition without
expecting any pattern).
This is used by expect() when calling expect_list(). Thus expect() is
nothing more than::
cpl = self.compile_pattern_list(pl)
return self.expect_list(cpl, timeout)
If you are using expect() within a loop it may be more
efficient to compile the patterns first and then call expect_list().
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cpl = self.compile_pattern_list(my_pattern)
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z SpawnBase.compile_pattern_listc K s> d|kr|j d�}|r$tdj|���| j|�}| j||||�S )a� This seeks through the stream until a pattern is matched. The
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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
When a match is found for the given pattern, the class instance
attribute *match* becomes an re.MatchObject result. Should an EOF
or TIMEOUT pattern match, then the match attribute will be an instance
of that exception class. The pairing before and after class
instance attributes are views of the data preceding and following
the matching pattern. On general exception, class attribute
*before* is all data received up to the exception, while *match* and
*after* attributes are value None.
When the keyword argument timeout is -1 (default), then TIMEOUT will
raise after the default value specified by the class timeout
attribute. When None, TIMEOUT will not be raised and may block
indefinitely until match.
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value specified by the class maxread attribute is used.
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().
On Python 3.4, or Python 3.3 with asyncio installed, passing
``async_=True`` will make this return an :mod:`asyncio` coroutine,
which you can yield from to get the same result that this method would
normally give directly. So, inside a coroutine, you can replace this code::
index = p.expect(patterns)
With this non-blocking form::
index = yield from p.expect(patterns, async_=True)
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zSpawnBase.expectc K sj |dkr| j }d|kr |jd�}|r2tdj|���t| t|�|�}|r\ddlm} |||�S |j|�S dS )am This takes a list of compiled regular expressions and returns the
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searching is faster than RE matching and it is possible to limit the
search to just the end of the input buffer.
This method is also useful when you don't want to have to worry about
escaping regular expression characters that you want to match.
Like :meth:`expect`, passing ``async_=True`` will make this return an
asyncio coroutine.
r rm z Unknown keyword arguments: {}c s4 | t tfkr| S t| � j�r&� j| �S � j| � d S )N)r r rM r@ rN r` )r_ )rF r r �prepare_pattern� s
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immediately. r z.{%d}) r< rr r. r) rc rh rN rd r* )rF rV Zcre�indexr r r rQ � s zSpawnBase.readc C s@ |dkr| j � S | j| j| jg�}|dkr6| j| j S | jS dS )al This reads and returns one entire line. The newline at the end of
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