源代码是这样的：
#!/usr/bin/env python3
import math
def mov(x,y,step,angle=0): if not isinstance(x,y,angle,(int,float)): raise TypeError('bad operand type') nx = x + step math.cos(angle) ny = y + step math.sin(angle) return nx,ny
结果总是NameError: name 'math' is not defined. 有大神会一眼看穿法帮忙瞅一眼吗？谢谢！
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上大陈小春
源代码是这样的：
#!/usr/bin/env python3
-- coding: utf-8 --
import math
def mov(x,y,step,angle=0): if not isinstance(x,y,angle,(int,float)): raise TypeError('bad operand type') nx = x + step math.cos(angle) ny = y + step math.sin(angle) return nx,ny
结果总是NameError: name 'math' is not defined. 有大神会一眼看穿法帮忙瞅一眼吗？谢谢！