44 lines
938 B
Python
44 lines
938 B
Python
import random
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import time
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def rndstr(length):
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return ''.join(random.choice('0123456789abcdef') for i in range(length))
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def choice(arr):
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# randomize seed
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return random.choice(arr)
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def rndunicode():
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# randomize seed
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return chr(random.randint(0, 0x10FFFF))
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def choice_percent(elements):
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# elements is a dict of {percent: action}
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# like following:
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# elements = {
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# 10: lambda: 'a',
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# 20: lambda: 'b',
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# 30: lambda: 'c',
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# 40: lambda: 'd',
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# }
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# that means we have 10% chance to get 'a', 20% chance to get 'b', etc.
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total_percent = sum(elements.keys())
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# get random number
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rnd = random.randint(1, total_percent)
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# get action
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cumulative_percent = 0
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for percent, action in elements.items():
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cumulative_percent += percent
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if rnd <= cumulative_percent:
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return action
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# should not reach here
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return None
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