擅长:python、mysql、java
<p>改变</p>
<pre><code>np.datetime64(np.asarray(isod))
</code></pre>
<p>到</p>
<pre><code>np.asarray(isod).astype(np.datetime64)
</code></pre>
<p>完整代码:</p>
<p><a href="https://tio.run/##NY1LCsMwDET3PsVQCNjghvz6hZ6kZGFwSr2wIxx34V4@VdxWiAcaaUaU03MO/bo6T3NMCC9PGWZBICFczrjh3jVdo/Fneyk8F55G4bwvRxpD6aPGmVVrN7XlK42@LA4jJy5z0UfxmCOyhtewcAFvR5LfaXAcw1p1FeDaDLUhmoKVu2qw@6rpvtihgvwlKCVEajk4UG0WE6PJcnMqnlKmSbJuTZqS89NxUIKiC0mmVq3rBw" rel="nofollow noreferrer" title="Python 3 – Try It Online">Try it online!</a></p>
<pre><code>import numpy as np
iyy = [2020, 2020, 2019, 2018, 2017]
imm = [2, 4, 4, 6, 8]
idd = [1, 2, 3, 4, 5]
isod = []
for y, m, d in zip(iyy, imm, idd):
isod.append("%4d-%02d-%02d" % (y, m, d))
t1 = np.asarray(isod).astype(np.datetime64)
print(t1)
</code></pre>
<p>输出:</p>
<pre><code>['2020-02-01' '2020-04-02' '2019-04-03' '2018-06-04' '2017-08-05']
</code></pre>