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Copy pathdef_func.py
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55 lines (41 loc) · 1.44 KB
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#!/usr/bin/env python3
# ! -*- coding:utf-8 -*-
import math
def my_abs(x):
if not isinstance(x, (int, float)):
raise TypeError('bad operand type')
if x >= 0:
return x
else:
return -x
n = my_abs(-20)
print('my_abs return', n)
def move(x, y, step, angle=0):
nx = x + step * math.cos(angle)
ny = y + step * math.sin(angle)
return nx, ny
x, y = move(100, 100, 60, math.pi / 6)
print('x-->y', x, y)
def quadratic(a, b, c):
if not isinstance(a, (int, float)):
raise TypeError("TypeError, please input number of int or float")
if not isinstance(b, (int, float)):
raise TypeError("TypeError, please input number of int or float")
if not isinstance(c, (int, float)):
raise TypeError("TypeError, please input number of int or float")
data = b * b - 4 * a * c
if data > 0:
x1 = (-b + math.sqrt(data)) / (2 * a)
x2 = (-b - math.sqrt(data)) / (2 * a)
print("the two answers of the equation x1 = {0:.2f}, x2 = {1:.2f}".format(x1, x2))
elif data == 0:
x1 = (-b) / (2 * a)
print("the answers of the equation x1 = x2 = {0:.2f}".format(x1))
else:
print("the equation has no answer!")
return quadratic
print('quadratic is ', quadratic(3, 12, 3))
a = input("请输入一个整数：")
print('hex函数的作用就是把一个整数输出为16进制的字符串')
s = hex(int(a)) # hex()函数
print('hex(%d)=\'%s\'' % (int(a), s))