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How to use command_while method in pytest-play

Best Python code snippet using pytest-play_python

parser.py

Source:parser.py

...82        words.append(w)83    cmd = Command(words).with_assignment(*assignments).with_redirect(*redirs)84    return cmd85@generate("while")86def command_while():87    yield ws.optional()88    redirs1 = yield redirects89    yield ws.optional()90    yield string("while")91    cond = yield command_sequence92    yield whitespace.optional() >> string("do") << ws.optional() << eol.optional()93    body = yield command_sequence94    yield whitespace.optional() >> string("done")95    yield ws.optional()96    redirs2 = yield redirects97    return While(condition=cond, body=body).with_redirect(*redirs1, *redirs2)98@generate("cond")99def command_cond():100    yield ws.optional()...

subpascal.py

Source:subpascal.py

...119    if evaluate(condition):120        return evaluate(consequence)121    else:122        return evaluate(alternative)123def command_while(condition, block):124    while evaluate(condition):125        result = evaluate(block)126    return result127Command = collections.namedtuple('Command', 'symbol function')128COMMANDS = [129    Command('set', command_set),130    Command('begin', command_begin),131    Command('if', command_if),132    Command('while', command_while),133]134COMMAND_MAP = {cmd.symbol: cmd for cmd in COMMANDS}135def evaluate(expression):136    """Compute the value of an expression AST."""137    if isinstance(expression, int):  # integer...

python.py

Source:python.py

...56        """ Exec and return an expression57        """58        wait_time = float(command['seconds'])59        sleep(wait_time)60    def command_while(self, command, **kwargs):61        """ While expression is true-ish62        """63        timeout = command.get('timeout', 10)64        poll = command.get('poll', 0.1)65        expression = command['expression']66        sub_commands = command.get('sub_commands', [])67        end_time = time() + timeout68        while self.engine.execute_command({69                'provider': 'python',70                'type': 'exec',71                'expression': expression,72                }):73            for sub_cmd in sub_commands:74                self.engine.execute_command(sub_cmd)...

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