擅长:python、mysql、java
<p>使用<a href="http://docs.scipy.org/doc/scipy/reference/generated/scipy.optimize.fixed_point.html#scipy-optimize-fixed-point" rel="nofollow noreferrer">scipy.optimize.fixed_point</a>:</p>
<pre><code>import scipy.optimize as optimize
def func(x):
return -x**3+1
# This finds the value of x such that func(x) = x, that is, where
# -x**3 + 1 = x
print(optimize.fixed_point(func,0))
# 0.682327803828
</code></pre>
<p>定义<code>fixed_point</code>的Python代码位于scipy/optimize/minpack.py中。确切的位置取决于<code>scipy</code>的安装位置。你可以通过键入</p>
<pre><code>In [63]: import scipy.optimize
In [64]: scipy.optimize
Out[64]: <module 'scipy.optimize' from '/usr/lib/python2.6/dist-packages/scipy/optimize/__init__.pyc'>
</code></pre>
<p>通过转到<a href="https://docs.scipy.org/doc/scipy/reference/generated/scipy.optimize.fixed_point.html#scipy-optimize-fixed-point" rel="nofollow noreferrer">documentation page</a>并单击<code>[source]</code>链接,可以在线找到当前的<code>fixed_point</code>源代码。</p>