在python中，有一个math module，你可以import math，里面有math.sin(), math.cos(), math.asin()和math.acos()四个函数。相信你也知道asin和acos的意思，就是arcsin和arccos。有了这四个函数你就可以求函数值和角度了。但是要注意括号里面填的数值，要用弧度制。
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I just wrote an simple one for one other guy.
You may check it here and see if it's useful for you.
I wrote this in Tkinter for you, in case you don't know Tkinter, it is a built-in module for most python versions.
If you want a commandline version, you can ask me, but tell you what, since those values are all
float numbers, so it's hard to get a precise graph in commandline window.
Well, in this version, I enlarged each element's position by 40 and then change them to integer, guess this is an endurable loss of precision.
#
from math import radians
from math import sin
from Tkinter import *
pos = []
xPos = 0
centerX = 0
centerY = 0
for deg in range(-360, 361, 10):
pos.append([xPos, int(40*(sin(radians(deg))))]) #1000 too big for my screen
xPos+=1
if deg == 0:
centerX = xPos-1
centerY = pos[-1][1]
root = Tk()
root.title('trianble graph from -180 to 180')
width, height = 550, 450
mHei = height/2
mWid = width/2
canvas = Canvas(root, width=width, height=height)
canvas.create_line(0, mHei, width, mHei) #x axis
canvas.create_line(mWid, 0, mWid, height) #y axis
xStep = (width-150)/len(pos)
yStep = (height-150)/len(pos)
radius = 3
# the middle point (sin(0) is first drawn and used as position reference for all
canvas.create_oval(mWid-radius, mHei-radius, mWid+radius, mHei+radius, fill='green')
print pos
print xStep, yStep, centerX, centerY
#exit(0)
for i in pos:
if i[0] == centerX: #center processed already.
continue
x = mWid + xStep*(i[0]-centerX)
# y is smaller, the bigger the value, so use minus
y = mHei - yStep*(i[1]-centerY)
canvas.create_oval(x-radius, y-radius, x+radius, y+radius, fill='green')
canvas.pack()
root.mainloop()
rows = int(input('输入列数：'))
for i in range(1, rows):
print('*' * i)
for i in range(1, rows):
for j in range(i):
print("*", end="")
print("")
rows = int(input('输入列数：'))
for i in range(1, rows):
print(' * ' * i)
for i in range(1, rows):
for j in range(1, i + 1):
print(" * ", end="")
print("")
rows = int(input('输入列数：'))
for i in range(1, rows):
if i % 2 != 0:
str = ('*' * i)
print(str.center(9, ' '))
rows = int(input('输入列数：'))
for i in range(0, rows):
print(" * " * rows)
for i in range(0, rows):
for j in range(0, rows):
print(" * ", end="")
print(" ")
for x in range(10):
for i in range(x, 10):
print('*', end='')
print('')
print('同一行打印直角三角形')
for j in range(10):
for x in range(0, j):
print(' ', end='')
for n in range(j, 19 - j):
print(' ', end='')
for k in range(0, j):
print(' ', end='')
print('')
print('直角三角形拼装心形')
for j in range(8):
for x in range(0, j):
print(' ', end='')
for n in range(j, 19 - j):
print(' ', end='')
for k in range(0, j):
print(' ', end='')
print('')
for i in range(10):
for j in range(0, 0 + i):
print(end=' ')
for k in range(0 + i, 10):
print('*', end=' ')
print('')
print('打印倒立等腰三角形1')
for j in range(10):
for x in range(0, j):
print(end=' ')
for n in range(j, 15 - j):
print('*', end='')
print('打印倒立等腰三角形2')
for i in range(10):
for j in range(0, 0 + i):
print(end=' ')
for k in range(0 + i, 10):
print('*', end=' ')
print('')
print('同一行打印两个等腰三角形')
for i in range(10):
for j in range(0, 10 - i):
print(end=' ')
for k in range(10 - i, 10):
print(' ', end=' ')
for n in range(0, 0):
print(end=' ')
for m in range(0 + i, 10):
print(' ', end=' ')
for jj in range(10, 10):
print(end=' ')
for kk in range(10 - i, 10):
print(' ', end=' ')
print('')
print('等腰三角形拼装心形')
for i in range(10):
for j in range(0, 10 - i):
print(end=' ')
for k in range(10 - i, 10):
print(' ', end=' ')
for n in range(0, 0):
print(end=' ')
for m in range(0 + i, 10):
print(' ', end=' ')
for jj in range(10, 10):
print(end=' ')
for kk in range(10 - i, 10):
print(' ', end=' ')
print('')
for i in range(20):
for j in range(0, 0 + i):
print(end=' ')
for k in range(0 + i, 20):
print('*', end=' ')
print('')
print('打印正方形')
for i in range(10):
for j in range(0, 10 - i):
print(end=' ')
for n in range(0, 0 + i):
print(end=' ')
for m in range(0 + i, 10):
print(' ', end=' ')
for k in range(10 - i, 10):
print(' ', end=' ')
print('')
#打印倒立的正三角形
hang = int(input("请输入行数："))
y = 1
while y = hang:
space = 1
while space y:
print(" ",end="")
space += 1
x = hang - y
while x = 0:
print("* ",end="")
x -= 1
print()
y += 1
print("图形打印完成！")