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dangerridges-e-for-python.py
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dangerridges-e-for-python.py
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import decimal
import tkinter as tk
from tkinter import ttk
import pyperclip
def calculate_e(n):
# Limit n to 50,000
if n > 50000:
n = 50000
# Increase precision to avoid overflow/underflow errors
context = decimal.getcontext()
context.prec = n + 10
# Calculate e using Taylor series
e = decimal.Decimal(1)
factorial = decimal.Decimal(1)
for i in range(1, n+1):
factorial *= i
e += decimal.Decimal(1) / factorial
# Convert result to string and truncate to n+2 decimal places
return str(e)[:n+2]
class Application(tk.Frame):
def __init__(self, master=None):
super().__init__(master)
self.master = master
self.master.title("Calculate e")
self.style = ttk.Style(self.master)
self.style.theme_use('clam')
self.create_widgets()
def create_widgets(self):
# Prompt the user to enter the number of digits to calculate
self.label = tk.Label(self.master, text="Enter the number of digits of e to calculate (max 50,000):", font=('Arial', 12))
self.label.pack(pady=10)
# Entry widget for user input
self.entry = tk.Entry(self.master, font=('Arial', 12))
self.entry.pack(pady=10)
# Button to initiate calculation
self.button = tk.Button(self.master, text="Calculate", font=('Arial', 12), command=self.calculate)
self.button.pack(pady=10)
# Text widget to display result
self.result = tk.Text(self.master, font=('Arial', 12), height=10, width=50)
self.result.pack(pady=10)
# Button to copy result to clipboard
self.copy_button = tk.Button(self.master, text="Copy", font=('Arial', 12), command=self.copy)
self.copy_button.pack(pady=10)
def calculate(self):
# Get user input and calculate e
n = int(self.entry.get())
e = calculate_e(n)
# Clear previous output and display new result
self.result.delete('1.0', tk.END)
self.result.insert('1.0', f"e with {n} digits of accuracy:\n{e}")
def copy(self):
# Copy result to clipboard
result = self.result.get('1.0', tk.END)
pyperclip.copy(result)
root = tk.Tk()
app = Application(master=root)
app.mainloop()