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Add initial version of chapter 11, part 4

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This commit is contained in:
Alexander Hess 2020-10-28 16:18:15 +01:00
commit 85b7fd274c
Signed by: alexander
GPG key ID: 344EA5AB10D868E0
9 changed files with 2927 additions and 222 deletions
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12
11_classes/sample_package/vector.py
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@ -7,8 +7,8 @@ import numbers
# If third-party libraries are needed, they are
# put into a group on their own in between.
# Within a group, imports are sorted lexicographically.
from sample_package import matrix
from sample_package import utils
from sample_package.matrix import Matrix
class Vector:
@ -17,6 +17,7 @@ class Vector:
All entries are converted to floats, or whatever is set in the typing attribute.
Attributes:
matrix_cls (matrix.Matrix): a reference to the Matrix class to work with
storage (callable): data type used to store the entries internally;
defaults to tuple
typing (callable): type casting applied to all entries upon creation;
@ -25,6 +26,7 @@ class Vector:
defaults to 1e-12
"""
matrix_cls = matrix.Matrix
storage = utils.DEFAULT_ENTRIES_STORAGE
typing = utils.DEFAULT_ENTRY_TYPE
zero_threshold = utils.ZERO_THRESHOLD
@ -219,7 +221,7 @@ class Vector:
def __abs__(self):
"""The Euclidean norm of a vector."""
return utils.norm(self) # use the norm() function shared with the Matrix class
return utils.norm(self) # uses the norm() function shared matrix.Matrix
def __bool__(self):
"""A Vector is truthy if its Euclidean norm is strictly positive."""
@ -246,7 +248,7 @@ class Vector:
column vector or a row vector; defaults to True
Returns:
matrix (Matrix)
matrix (matrix.Matrix)
Example Usage:
>>> v = Vector([1, 2, 3])
@ -256,5 +258,5 @@ class Vector:
Matrix(((1.000, 2.000, 3.000,)))
"""
if column:
return Matrix([x] for x in self)
return Matrix([(x for x in self)])
return self.matrix_cls([x] for x in self)
return self.matrix_cls([(x for x in self)])