.pythonstartup

from math import *
from decimal import Decimal as dm

# from sympy import *
# from sympy.logic import *
# import sympy
# x1,x2,x3=sympy.symbols('x1 x2 x3')

# import sys
# sys.ps1='PYTHON:>>> '






# commmand: sudo apt install python-pip python3-pip
# interpreter: python2 python3 pypy

# about pypy:
# sudo apt install pypy 
# get-pip.py : https://github.com/anpengapple/pypy_get_pip
# pypy get-pip.py
# cyaron:faster / other:slower

# lib:
# cyaron
# math
# decimal
# sympy
# numpy
# scipy
# pandas
# matplotlib
# ipython
# isympy
# pdb
# pudb