69 lines
2.8 KiB
Python
69 lines
2.8 KiB
Python
#!/usr/bin/env python3
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#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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# Copyright 2012 California Institute of Technology. ALL RIGHTS RESERVED.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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# United States Government Sponsorship acknowledged. This software is subject to
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# U.S. export control laws and regulations and has been classified as 'EAR99 NLR'
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# (No [Export] License Required except when exporting to an embargoed country,
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# end user, or in support of a prohibited end use). By downloading this software,
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# the user agrees to comply with all applicable U.S. export laws and regulations.
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# The user has the responsibility to obtain export licenses, or other export
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# authority as may be required before exporting this software to any 'EAR99'
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# embargoed foreign country or citizen of those countries.
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#
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# Author: Eric Gurrola
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#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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## pause is a raw_input wrapper
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def pause(cont="go",ex="exit",ignore=False, message="", bell=True):
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"""pause function. Pauses execution awaiting input.
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Takes up to three optional arguments to set the action strings:
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cont = first positional or named arg whose value is a string that causes execution
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to continue.
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Default cont="go"
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ex = second positional or named arg whose value is a string that causes execution
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to stop.
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Default ex="exit"
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ignore = third positional or named arg whose value cause the pause to be ignored or
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paid attention to.
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Default False
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message = and optional one-time message to send to the user"
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bell = True: ring the bell when pause is reached.
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"""
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if not ignore:
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x = ""
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if message or bell:
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message += chr(7)*bell
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print(message)
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while x != cont:
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try:
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x = raw_input(
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"Type %s to continue; %s to exit: " % (cont, ex)
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)
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except KeyboardInterrupt:
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return None
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if x == ex:
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# return the "INTERUPT" system error.
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import errno
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import sys
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return sys.exit(errno.EINTR)
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pass
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pass
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return None
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