Python Can't Multiply Sequence by Non-Int of Type 'Float'
I Am Trying to Evaluate a Formula, Np Is Numpy: Ds = Pow(10,5) D = Np. Linspace(0, Pow(10,6), 100) Alpha=1.44 Beta=0.44 A=Alpha*(D/Ds) L=1.65 Buf2=L/4.343...
I am trying to evaluate a formula, np is numpy:
Ds = pow(10,5)
D = np.linspace(0, pow(10,6), 100)
alpha=1.44
beta=0.44
A=alpha*(D/Ds)
L=1.65
buf2=L/4.343
buf=pow(-(alpha*[D/Ds]),beta)
value=exp(buf)
and then I will plot this data but I get:
buf=pow(-(alpha*[D/Ds]),beta)
TypeError: can't multiply sequence by non-int of type 'float'
How can I overcome this?
1 Answer
Change:
buf=pow(-(alpha*[D/Ds]),beta)
to:
buf=pow(-(alpha*(D/Ds)),beta)
This:
[D/Ds]
gives you list with one element.
But this:
alpha * (D/Ds)
computes the divisions before the multiplication with alpha.
You can multiply a list by an integer:
>>> [1] * 4
[1, 1, 1, 1]
but not by a float:
[1] * 4.0
TypeError: can't multiply sequence by non-int of type 'float'
since you cannot have partial elements in a list.
Parenthesis can be used for grouping in the mathematical calculations:
>>> (1 + 2) * 4
12
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