Fixed code standard

Author: lin-toto

cyaron/io.py

@@ -117,7 +117,7 @@ def output_gen(self, shell_cmd):
             self.output_file.write(subprocess.check_output(shell_cmd, shell=True, stdin=f).decode('ascii'))
 
         self.input_file = open(self.input_filename, 'a')
-        print(self.output_filename," done")
+        print(self.output_filename, " done")
 
     def output_write(self, *args, **kwargs):
         """output_write(self, *args, **kwargs) -> None

cyaron/polygon.py

@@ -3,6 +3,7 @@
 import random
 import math
 
+
 class Polygon:
     def __init__(self,points=[]):
         if not list_like(points):

examples/test_bzoj2152.py

@@ -1,8 +1,6 @@
 #!/usr/bin/env python
 
 from cyaron import *
-def oper(x):
-    return "%d %d %d" % (x.start, x.end, x.weight)
 
 _n = ati([0,10,1e2,5e2,1e3,2e3,3e3,5e3,1e4,2e4,2e4])
 
@@ -12,7 +10,7 @@ def oper(x):
 
     t=Graph.tree(n,0.3,0.4,weight_limit=n)
     test_data.input_writeln(n)
-    test_data.input_writeln(t.to_str(output=oper))
+    test_data.input_writeln(t)
 
     test_data.output_gen("dr.exe")