attempt reformat

IPython/core/tests/simpleerr.py

@@ -1,32 +1,33 b''
 """Error script. DO NOT EDIT FURTHER! It will break exception doctests!!!"""
 import sys
 
 def div0():
     "foo"
     x = 1
     y = 0
     x/y
 
 def sysexit(stat, mode):
-    raise SystemExit(stat, f'Mode = {mode}')
+    raise SystemExit(stat, f"Mode = {mode}")
+
 
 def bar(mode):
     "bar"
     if mode=='div':
         div0()
     elif mode=='exit':
         try:
             stat = int(sys.argv[2])
         except:
             stat = 1
         sysexit(stat, mode)
     else:
         raise ValueError('Unknown mode')
 
 if __name__ == '__main__':
     try:
         mode = sys.argv[1]
     except IndexError:
         mode = 'div'
 
     bar(mode)