法一
import numpy
as np
a = np.arange(start=
0, stop=
9, step=
1, dtype=int)
a.resize(
3,
3)
print a
print type(a)
[[
0 1 2]
[
3 4 5]
[
6 7 8]]
<
type 'numpy.ndarray'>
Process finished with
exit code
0
要特别注意这里的 .resize 没有返回值：
print a.resize(
3,
3)
None
Process finished with
exit code
0
法二
import numpy
as np
a = np.arange(start=
0, stop=
9, step=
1, dtype=int).reshape(
3,
3)
print a
print type(a)
[[
0 1 2]
[
3 4 5]
[
6 7 8]]
<
type 'numpy.ndarray'>
Process finished with
exit code
0
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