44 lines
1.3 KiB
Python
44 lines
1.3 KiB
Python
def query(text):
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return input(f"{text} \n> ")
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def query_int(text):
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try:
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ans = query(text)
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return int(ans)
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except ValueError:
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print("Please enter a valid number!")
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return query_int(text)
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def query_yes_no(question, default="no"):
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"""Ask a yes/no question via raw_input() and return their answer.
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https://stackoverflow.com/questions/3041986/apt-command-line-interface-like-yes-no-input
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"question" is a string that is presented to the user.
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"default" is the presumed answer if the user just hits <Enter>.
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It must be "yes" (the default), "no" or None (meaning
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an answer is required of the user).
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The "answer" return value is True for "yes" or False for "no".
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"""
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valid = {"yes": True, "y": True, "ye": True, "no": False, "n": False}
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if default is None:
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prompt = " [y/n] "
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elif default == "yes":
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prompt = " [Y/n] "
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elif default == "no":
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prompt = " [y/N] "
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else:
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raise ValueError("invalid default answer: '%s'" % default)
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while True:
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choice = query(question + prompt).lower()
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if default is not None and choice == "":
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return valid[default]
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elif choice in valid:
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return valid[choice]
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else:
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print("Please respond with 'yes' or 'no' (or 'y' or 'n').")
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