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Absolute imports were introduced in Python 2.5 as a feature (e.g. from __future__ import absolute_import), and made default in Python 3. When absolute imports are enabled, the import system changes in a couple of ways: 1) The `import foo` syntax will *only* search sys.path. If `foo` isn't in sys.path, it won't be found. Period. Without absolute imports, the import system will also search the same directory that the importing file resides in, so that you can easily import from the same folder. 2) From inside a package, you can use a dot syntax to refer to higher levels of the current package. For example, if you are in the package lldbsuite.test.utility, then ..foo refers to lldbsuite.test.foo. You can use this notation with the `from X import Y` syntax to write intra-package references. For example, using the previous locationa s a starting point, writing `from ..support import seven` would import lldbsuite.support.seven Since this is now the default behavior in Python 3, this means that importing from the same directory with `import foo` *no longer works*. As a result, the only way to have portable code is to force absolute imports for all versions of Python. See PEP 0328 [https://www.python.org/dev/peps/pep-0328/] for more information about absolute and relative imports. Differential Revision: http://reviews.llvm.org/D14342 Reviewed By: Todd Fiala llvm-svn: 252191
64 lines
2.0 KiB
Python
64 lines
2.0 KiB
Python
from __future__ import print_function
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from __future__ import absolute_import
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# System modules
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import os
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import sys
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# Third-party modules
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import pexpect
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# LLDB Modules
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import lldb
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from .lldbtest import *
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from . import lldbutil
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class PExpectTest(TestBase):
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mydir = TestBase.compute_mydir(__file__)
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def setUp(self):
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TestBase.setUp(self)
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def launchArgs(self):
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pass
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def launch(self, timeout=None):
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if timeout is None: timeout = 30
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logfile = sys.stdout if self.TraceOn() else None
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self.child = pexpect.spawn('%s %s' % (lldbtest_config.lldbExec, self.launchArgs()), logfile=logfile)
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self.child.timeout = timeout
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self.timeout = timeout
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def expect(self, patterns=None, timeout=None, exact=None):
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if patterns is None: return None
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if timeout is None: timeout = self.timeout
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if exact is None: exact = False
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if exact:
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return self.child.expect_exact(patterns, timeout=timeout)
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else:
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return self.child.expect(patterns, timeout=timeout)
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def expectall(self, patterns=None, timeout=None, exact=None):
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if patterns is None: return None
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if timeout is None: timeout = self.timeout
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if exact is None: exact = False
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for pattern in patterns:
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self.expect(pattern, timeout=timeout, exact=exact)
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def sendimpl(self, sender, command, patterns=None, timeout=None, exact=None):
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sender(command)
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return self.expect(patterns=patterns, timeout=timeout, exact=exact)
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def send(self, command, patterns=None, timeout=None, exact=None):
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return self.sendimpl(self.child.send, command, patterns, timeout, exact)
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def sendline(self, command, patterns=None, timeout=None, exact=None):
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return self.sendimpl(self.child.sendline, command, patterns, timeout, exact)
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def quit(self, gracefully=None):
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if gracefully is None: gracefully = True
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self.child.sendeof()
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self.child.close(force=not gracefully)
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self.child = None
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