Python startup file, useful for using it as an interactive calculator.

pythonrc.py

import atexit
import sys
import os
import time
import readline
import inspect
import pyperclip

import math
import cmath
from math import *
from cmath import *


def c():
    global _
    try:
        pyperclip.copy(str(_))
    except Exception:
        pass
    return


try:
    histfile = os.environ["PYTHONHISTFILE"]
    readline.read_history_file(histfile)
except Exception:
    pass

atexit.register(readline.write_history_file, histfile)
atexit.register(c)

print("\n====== Real and/or Complex functions: ======", end="")
math_names = [f[0] for f in inspect.getmembers(math) if not f[0].startswith("__")]
math_names += [f[0] for f in inspect.getmembers(cmath) if not f[0].startswith("__")]
math_names = sorted(list(set(math_names)))

max_width = 85
max_name_length = max(len(name) for name in math_names)
num_columns = max_width // max_name_length

sublists = [[] for _ in range(num_columns)]
[sublists[i % num_columns].append(math_names[i]) for i in range(len(math_names))]
max_lengths = [max(len(name) for name in sub) for sub in sublists]

for i, name in enumerate(math_names):
    if i % num_columns == 0:
        print("")
    max_len = max_lengths[i % num_columns]
    print(f"{name:{max_len}}", end=" ")
print("\n")

i = 1j
j = 1j
Pi = PI = pi
E = e
print("i := j := sqrt(-1)")
print("_ := last result")
print("c() to copy last result")

sys.ps1 = ">>> "
sys.ps2 = "··· "

""".inputrc
# This makes assignments be automatically forwarded to _
$if python
    "=":"\e[1~__builtins__._ \C-v= \e[4~\C-v="
$endif
"""