Created
September 28, 2019 19:07
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class Vector(list): | |
def __init__(self, *el): | |
for e in el: | |
self.append(e) | |
def __add__(self, other): | |
if type(other) is Vector: | |
assert len(self) == len(other), "Error 0" | |
r = Vector() | |
for i in range(len(self)): | |
r.append(self[i] + other[i]) | |
return r | |
else: | |
other = Vector.emptyvec(lens=len(self), n=other) | |
return self + other | |
def __sub__(self, other): | |
if type(other) is Vector: | |
assert len(self) == len(other), "Error 0" | |
r = Vector() | |
for i in range(len(self)): | |
r.append(self[i] - other[i]) | |
return r | |
else: | |
other = Vector.emptyvec(lens=len(self), n=other) | |
return self - other | |
def __mul__(self, other): | |
if type(other) is Vector: | |
assert len(self) == len(other), "Error 0" | |
r = Vector() | |
for i in range(len(self)): | |
r.append(self[i] * other[i]) | |
return r | |
else: | |
other = Vector.emptyvec(lens=len(self), n=other) | |
return self * other | |
def __truediv__(self, other): | |
if type(other) is Vector: | |
assert len(self) == len(other), "Error 0" | |
r = Vector() | |
for i in range(len(self)): | |
r.append(self[i] / other[i]) | |
return r | |
else: | |
other = Vector.emptyvec(lens=len(self), n=other) | |
return self / other | |
def __pow__(self, other): | |
if type(other) is Vector: | |
assert len(self) == len(other), "Error 0" | |
r = Vector() | |
for i in range(len(self)): | |
r.append(self[i] ** other[i]) | |
return r | |
else: | |
other = Vector.emptyvec(lens=len(self), n=other) | |
return self ** other | |
def __mod__(self, other): | |
return sum((self - other) ** 2) ** 0.5 | |
def mod(self): | |
return self % Vector.emptyvec(len(self)) | |
def dim(self): | |
return len(self) | |
def __str__(self): | |
if len(self) == 0: | |
return "Empty" | |
r = [str(i) for i in self] | |
return "< " + " ".join(r) + " >" | |
def _ipython_display_(self): | |
print(str(self)) | |
@staticmethod | |
def emptyvec(lens=2, n=0): | |
return Vector(*[n for i in range(lens)]) | |
@staticmethod | |
def randvec(dim): | |
return Vector(*[random.random() for i in range(dim)]) |
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