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def f(x):
	return x*x
 
def tabF(f,a,b,n):
	dx=(b-a)/n
	r=[]
	for i in range(n):
		x=a+i*dx
		y=f(x)
		r=r+[y]
	return r
 
def min_max(y):
	mi=y[0]
	ma=y[0]
	for a in y: 
		if a > ma:
			ma=a
		if a < mi:
			mi=a
	return (mi,ma)
 
 
def draw(f,a,b,nx,ny):
	scr=[['' for i in range(nx)] for j in range(ny)]
	y=tabF(f,a,b,nx)
	(ymin,ymax)=min_max(y)
	 for i in range(nx): 
	 	k=int((ymax-y[i])/(ymax-ymin)*ny)
	 	if k>=ny:
	 		k=ny-1
	 	scr[k][i]='*'
	 for i in range (ny):
	 	for j in range(nx):
	 		print(scr[i][j],end='')
	 	print("")
 
draw(f,-5,5,80,20)
 
print (tabF(f,-5,5,80))

Traceback (most recent call last):
  File "/usr/lib/python3.7/py_compile.py", line 143, in compile
    _optimize=optimize)
  File "<frozen importlib._bootstrap_external>", line 791, in source_to_code
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "./prog.py", line 28
    for i in range(nx): 
    ^
IndentationError: unexpected indent

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/usr/lib/python3.7/py_compile.py", line 147, in compile
    raise py_exc
py_compile.PyCompileError: Sorry: IndentationError: unexpected indent (prog.py, line 28)

Standard output is empty