[0008_inline_strip] Strip inline, don't do a second iteration

--------------------------------------------------------------------------------------------------------- benchmark: 4 tests ---------------------------------------------------------------------------------------------------------
Name (time in ns)                                     Min                     Max                  Mean                StdDev                Median                IQR            Outliers  OPS (Kops/s)            Rounds  Iterations
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
test_benchmark_extract_tokens_short_simple       790.9257 (1.0)       25,041.9835 (1.00)       965.2633 (1.0)        690.2278 (5.36)       917.0035 (1.0)      42.0259 (1.02)      261;825    1,035.9868 (1.0)       55814           1
test_benchmark_extract_tokens_long_simple      1,207.9254 (1.53)     568,790.9434 (22.75)    1,424.0680 (1.48)     1,607.7592 (12.49)    1,415.9596 (1.54)     83.0041 (2.02)     544;6540      702.2137 (0.68)     179118           1
test_benchmark_extract_tokens_short_nested     1,499.8950 (1.90)      24,999.9575 (1.0)      1,632.3808 (1.69)       136.4377 (1.06)     1,625.0415 (1.77)     41.0946 (1.0)     1290;4671      612.6022 (0.59)     146349           1
test_benchmark_extract_tokens_long_nested      2,291.0535 (2.90)      28,708.0184 (1.15)     2,454.3364 (2.54)       128.6998 (1.0)      2,457.9931 (2.68)     42.0259 (1.02)    1624;8542      407.4421 (0.39)     146349           1
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

casbin/persist/adapter.py

@@ -47,13 +47,12 @@ def _extract_tokens(line):
         elif not stack:
             # must be a comma outside of any nesting: we've found the end of a top level token so
             # save that and start a new one
-            tokens.append(line[start_idx : match.start()])
+            tokens.append(line[start_idx : match.start()].strip())
             start_idx = match.end()
 
     # trailing token after the last ,
-    tokens.append(line[start_idx:])
+    tokens.append(line[start_idx:].strip())
 
-    tokens = [x.strip() for x in tokens]
     return tokens