迭代两个列表并匹配时优化python中的循环

Question

我一直在Python中使用cProfile来更好地了解我应该集中精力减少计算时间。

偶尔我会遍历两个列表并找到匹配的对。一个列表包含整数列表，第二个列表是一个dicts列表。通常，一个列表很长，另一个列表很短。

考虑我有一个列表，nodes：

[[532134.752, 181854.93], [532132.6, 181861.504]]

我还有一个列表，links：

[{'index': 0, 'polyline': [523732, 189041, 523735, 189069]},
 {'index': 1, 'polyline': [523711, 189069, 523732, 189041]},
 {'index': 2,
  'polyline': [499766.775,
               151379.967,
               499766,
               151381,
               499763,
               151385,
               499760,
               151387,
               499756,
               151389,
               499751,
               151389,
               499750,
               151389]},
 {'index': 3,
  'polyline': [519679,
               196844,
               519683,
               196842,
               519688,
               196838,
               519699,
               196827,
               519702,
               196822,
               519705,
               196818,
               519707.203,
               196814.758,
               519708.274,
               196810.043]},
 {'index': 4,
  'polyline': [499442,
               152969,
               499445,
               152971,
               499447,
               152973,
               499448.105,
               152975.987,
               499447,
               152981]},
 {'index': 5,
  'polyline': [524647.824,
               197808.45,
               524645.358,
               197803.279,
               524643.13,
               197798.823,
               524640.346,
               197791.027,
               524639,
               197786,
               524635,
               197760,
               524634,
               197755]},
 {'index': 6,
  'polyline': [499430.818,
               152970.364,
               499432.348,
               152969.551,
               499433.862,
               152968.746,
               499437,
               152968,
               499442,
               152969]},
 {'index': 7,
  'polyline': [524647.824,
               197808.45,
               524648,
               197797,
               524643,
               197772,
               524641,
               197754]},
 {'index': 8,
  'polyline': [518334.171,
               198052.368,
               518327,
               198045,
               518325,
               198043,
               518325,
               198040,
               518325,
               198038,
               518327,
               198034,
               518337,
               198023]},
 {'index': 9,
  'polyline': [499770,
               151368,
               499770,
               151373,
               499769,
               151377,
               499766.775,
               151379.967]}]

我想在link列表中找到links中的nodes条记录。

localised_links = []
for node in nodes:
    for link in links:
        # the matching heuristic. Matches if the coordinates are first or last in polyline.
        if node == link['polyline'][0:2] or node == link['polyline'][-2:]:              
            localised_links.append(link)

如何提高此类操作的速度（如果有的话）？