add assert_tutorial

twtrubiks · twtrubiks · commit 4e766be06073 · 2021-03-07T16:50:27.000+08:00
diff --git a/README.md b/README.md
@@ -18,6 +18,8 @@ Python Notes 學習筆記 📝
 
 [repr_tutorial.py](https://github.com/twtrubiks/python-notes/blob/master/repr_tutorial.py) - repr tutorial
 
+[assert_tutorial.py](https://github.com/twtrubiks/python-notes/blob/master/assert_tutorial.py) - assert tutorial
+
 [str_find_tutorial.py](https://github.com/twtrubiks/python-notes/blob/master/str_find_tutorial.py) - str_find tutorial
 
 [attribute_obj.py](https://github.com/twtrubiks/python-notes/blob/master/attribute_obj.py) - setattr() , getattr() , hasattr()
diff --git a/assert_tutorial.py b/assert_tutorial.py
@@ -0,0 +1,20 @@
+
+def ex1():
+
+    x = "hello"
+
+    # returns True, then nothing happens
+    assert x == "hello"
+
+    # raise AssertionError
+    assert x == "world"
+
+def ex2():
+
+    x = "hello"
+    assert x == "world", "x should be 'hello'"
+
+if __name__ == "__main__":
+    ex1()
+    # ex2()
+
