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<p>下面是我的代码,我正在使用Python2.7</p>
<pre><code>#list of angle couples
phipsi=[[48.6,53.4],[-124.9,156.7],[-66.2,-30.8],[-58.8,-43.1], \
[-73.9,-40.6],[-53.7,-37.5],[-80.6,-16.0],[-68.5,135.0], \
[-64.9,-23.5],[-66.9,-45.5],[-69.6,-41.0],[-62.7,-37.5], \
[-68.2,-38.3],[-61.2,-49.1],[-59.7,-41.1],[-63.2,-48.5], \
[-65.5,-38.5],[-64.1,-40.7],[-63.6,-40.8],[-66.4,-44.5], \
[-56.0,-52.5],[-55.4,-44.6],[-58.6,-44.0],[-77.5,-39.1], \
[-91.7,-11.9],[48.6,53.4]]
#minimal deviation tolerated for the 1st number
a=-57-30
#maximal deviation tolerated for the 1st number
b=-57+30
#minimal deviation tolerated for the 2nd number
c=-47-30
#maximal deviation tolerated for the 2nd number
d=-47+30
i=0
#Check if the couple fit into the intervals of numbers
while i < len(phipsi):
if phipsi[i][0]>a and phipsi[i][0]<b:
if phipsi[i][1]>c and phipsi[i][1]<d:
print ('the couple ', phipsi[i] ,' has his angles in helix')
else:
print ('the couple ', phipsi[i] ,' does not have his angles in helix')
i=i+1
</code></pre>
<p>这就是我得到的</p>
^{pr2}$
<p>我怎么才能得到</p>
<pre><code>the couple [-77.5, -39.1] has his angles in helix
the couple [-91.7, -11.9] does not have his angles in helix
</code></pre>
<p>我查看了帮助部分或其他符号,但无法理解。。。谢谢你的帮助</p>