013_07_Python_Copy_Dictionaries.ipynb

{"nbformat":4,"nbformat_minor":2,"metadata":{"orig_nbformat":4,"language_info":{"name":"python","version":"3.8.5","mimetype":"text/x-python","codemirror_mode":{"name":"ipython","version":3},"pygments_lexer":"ipython3","nbconvert_exporter":"python","file_extension":".py"},"kernelspec":{"name":"python3","display_name":"Python 3.8.5 64-bit ('base': conda)"},"interpreter":{"hash":"00034aa5cd6c44013b830fd98c7a620a61a498e75425ca81fcc1166b84a69895"},"colab":{"name":"013_07_Python_Copy_Dictionaries.ipynb","provenance":[],"collapsed_sections":[]}},"cells":[{"cell_type":"markdown","source":["# การคัดลอก Dictionary"],"metadata":{"id":"89aFrrErWGHB"}},{"cell_type":"markdown","source":["เราไม่สามารถคัดลอก dictionary โดยการใช้เครื่องหมายเท่ากับ เช่น  dict2 = dict1\r\n","\r\n","เพราะ dict2 จะอ้างอิงกับ dict1 และการเปลี่ยนแปลงที่เกิดขึ้นใน dict1 จะลงผลกับ dict2 อัตโนมัติ"],"metadata":{"id":"7_rDTdgEWGHG"}},{"cell_type":"markdown","source":["## ตัวอย่าง\r\n","ใช้ method `copy()` คัดลอก dictionary"],"metadata":{"id":"2D4jhszJWGHH"}},{"cell_type":"code","execution_count":1,"source":["thisdict = {\r\n","  \"brand\": \"Honda\",\r\n","  \"model\": \"City\",\r\n","  \"year\": 2020\r\n","}\r\n","mydict = thisdict.copy()\r\n","print(mydict)"],"outputs":[{"output_type":"stream","name":"stdout","text":["{'brand': 'Honda', 'model': 'City', 'year': 2020}\n"]}],"metadata":{"id":"gCWqcLnEWGHH","outputId":"ec89644a-2973-4fe8-a395-8e9943a08ad1"}},{"cell_type":"markdown","source":["ใช้ built-in function `dict()` คัดลอก dictionary ได้เช่นกัน"],"metadata":{"id":"GhKYj1uxWGHJ"}},{"cell_type":"markdown","source":["## ตัวอย่าง\r\n","ใช้ function `dict()` คัดลอก dictionary "],"metadata":{"id":"mS2lKU7QWGHK"}},{"cell_type":"code","execution_count":2,"source":["thisdict = {\r\n","  \"brand\": \"Honda\",\r\n","  \"model\": \"City\",\r\n","  \"year\": 2020\r\n","}\r\n","mydict = dict(thisdict)\r\n","print(mydict)"],"outputs":[{"output_type":"stream","name":"stdout","text":["{'brand': 'Honda', 'model': 'City', 'year': 2020}\n"]}],"metadata":{"id":"vhTDbLO6WGHK","outputId":"4b4a8b47-0ed6-4e95-d1cf-0540779fde17"}}]}