更新1.HelloWorld/1.jpg, 1.HelloWorld/2.png, 1.HelloWorld/3.png,...

更新1.HelloWorld/1.jpg, 1.HelloWorld/2.png, 1.HelloWorld/3.png, 1.HelloWorld/4.png, 1.HelloWorld/5.png, 1.HelloWorld/6.png, 1.HelloWorld/7.png, 1.HelloWorld/C.png, 1.HelloWorld/Python_Turtorial1之Hello world.md, 1.HelloWorld/mintty.2021-01-24_20-38-43.png, 1.HelloWorld/.gitkeep
已删除Demo1.py, Py.jpg

Demo1.py

-d = {'a':'apple', 'b':'banana', 'c':'car', 'd': 'desk'}
-for key in d:
-    # 遍历字典时遍历的是键
-    print(key, d.get(key))
-# for key, value in d.items():
-# 上下两种方式等价 d.items() <=> dict.items(d)
-for key, value in dict.items(d):
-    print(key, value)
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