save project

zilin.py

-b={'孙老师':1,'我':100}
-b['孙老师']=100
-b['我']=1000
-
-print(b['我'])
+b={'a':1,'b':2}
+b['a']=100
+b['b']=200
+b['c']=300
+print(b)
\ No newline at end of file
+if 'c' in b:
+    print(b['c'])