79 lines
1.9 KiB
Python
Executable File
79 lines
1.9 KiB
Python
Executable File
#!/usr/bin/env python3
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import random, datetime, os, math, decimal
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MAX_SIMULATIONS = 100_000
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class ProgressBar:
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def __init__(self, size=100, prompt=None):
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self.size = size
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self.prompt = prompt
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self.at = 0
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self.columns = os.get_terminal_size().columns
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self.space = self.columns - 9
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self.percent = None
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self.moved = None
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if self.prompt is not None:
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self.space -= len(self.prompt) + 1
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decimal.getcontext().prec = 4
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def move(self, amt=1):
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self.at += amt
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self.percent = decimal.Decimal.from_float(self.at / self.size)
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self.moved = math.floor(self.space * self.percent)
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def render_bar(self):
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return ("\u2588" * self.moved) + (" " * (self.space - self.moved))
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def progress(self):
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percent = self.percent * 100
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if percent.compare(decimal.Decimal(100)) == decimal.Decimal(-1):
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return f"{percent:05.2f}"
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else:
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return f"{percent:.1f}"
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def render(self):
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if self.prompt is not None:
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return f"{self.prompt} [{self.render_bar()}] {self.progress()}%"
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else:
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return f"[{self.render_bar()}] {self.progress()}%"
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def __str__(self):
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return self.render()
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count = int(input(f"Total birthdays: "))
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matches = 0
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prog_bar = ProgressBar(size=MAX_SIMULATIONS, prompt="Running simulations")
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for simulation in range(MAX_SIMULATIONS):
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birthdays = { }
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for idx in range(count):
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year = datetime.date(2001, 1, 1)
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days = datetime.timedelta(random.randint(0, 364))
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birthday = year + days
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if birthday in birthdays:
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matches += 1
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break
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else:
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birthdays[birthday] = 0
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prog_bar.move(1)
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end = ""
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if simulation == MAX_SIMULATIONS - 1:
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end = "\n"
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print(f"\r{prog_bar}", end=end)
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percent = decimal.Decimal.from_float(matches / MAX_SIMULATIONS) * 100
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if matches == MAX_SIMULATIONS:
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print(f"Calculated {percent:.1f}% people shared a birthday.")
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else:
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print(f"Calculated {percent:05.2f}% people shared a birthday.")
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