I need to create something like:
x1 = [1 1 1]
x2 = [2 2 2]
.
.
.
xn = [n n n]
and for this, I was thinking of doing:
for i in range(whatever):
xi = np.array([i, i, i])
but it doesn't work, obviously. pleasy help me!
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4 Answers
you cant create names or data types or objects like that in python or any other language. use a list object, append to it and you are the person to know that each entry in the list is your "variable Xi":
Use list comprehension
X = [np.array([i, i, i]) for index in range(100)]
Comments
I think you cannot use dynamic variable names in python, but you still can have dynamic dictionary keys. You can use a dictionary to achieve something like this:
data = {}
for i in range(100):
data['x'+str(i)] = np.array([i, i, i])
Or use the comprehension method
data = {'x{}'.format(i): np.array([i, i, i]) for i in range(100)}
Or using lists:
data = [np.array([i, i, i]) for i in range(100)]
Comments
I highly recommend using a dict() or a list(), but what you're trying to do is fairly simple:
for i in range(whatever):
locals()[f'x{i+1}'] = np.array([i, i, i])
Dictionary:
d = {f'x{i+1}':np.array([i, i, i]) for i in range(whatever)}
