python如何对列表[(a, b),(a, b)]进行排序?

Question

aalist = [(1184, 862), (1034, 871), (968, 848), (910, 834), (716, 832), (594, 872), (594, 872), (855, 834), (796, 837), (1330, 827), (1330, 827), (623, 834)]

python如何对列表进行排序

[(a, b),(a, b)]

对前面的a 按照大小进行排序

Answer 1

➜  ~ ipython
Python 3.9.12 (main, Apr  5 2022, 01:53:17)
Type 'copyright', 'credits' or 'license' for more information
IPython 8.2.0 -- An enhanced Interactive Python. Type '?' for help.

In [1]: aalist = [(1184, 862), (1034, 871), (968, 848), (910, 834), (716, 832), (594, 872), (594, 872), (855, 834), (796, 837), (1330, 827), (1330, 827), (623, 834)]
   ...:

In [2]: sorted(aalist, key=lambda _: _[0])
Out[2]:
[(594, 872),
 (594, 872),
 (623, 834),
 (716, 832),
 (796, 837),
 (855, 834),
 (910, 834),
 (968, 848),
 (1034, 871),
 (1184, 862),
 (1330, 827),
 (1330, 827)]