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使用環境: Python 3.5.2
1. 存取字典檔
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| # 建置空的 dictionary | |
| dict = {} | |
| #加入值為array的資料 | |
| dict['array'] = [1,2,3,4,5] | |
| #印出剛剛加入的資料 | |
| print("Result: ", dict['array']) | |
| #Result: [1, 2, 3, 4, 5] | |
| #加入值為字串的資料 | |
| dict['str'] = "str" | |
| #印出所有 dictionary 內的資料 | |
| #只印出values部分 | |
| for value in dict.values(): | |
| print("Result:", value) | |
| # Result: str | |
| # Result: [1, 2, 3, 4, 5] | |
| #印出 key, value pair | |
| for key in dict.keys(): | |
| print("Result: ", key, " ", dict[key]) | |
| # Result: array [1, 2, 3, 4, 5] | |
| # Result: str str |
2. 存取陣列
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| #建立空的Array | |
| arr = [] | |
| #加入元素 | |
| arr.append("str") | |
| arr.append(3) | |
| arr.append(-1) | |
| #印出array中所有值 | |
| print("Result: ",arr) | |
| #Result: ['str', 3, -1] | |
| #印出特定index的值 | |
| print("Result: ", arr[0]) | |
| #Result: str | |
| #矩陣長度 | |
| print("Result: ",len(arr)) | |
| # Result: 3 |
3. 存取矩陣
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| #建立二為矩陣並且初始化為0矩陣 | |
| # 0, 0, 0, 0, 0 | |
| # 0, 0, 0, 0, 0 | |
| # 0, 0, 0, 0, 0 | |
| row = 3 | |
| column = 5 | |
| m = [[0 for x in range(column)] for y in range(row)] | |
| #讀取矩陣 | |
| for y in range(row): | |
| for x in range(column): | |
| print(y, " - ", x, " : ", m[y][x]) | |
| # 0 - 0 : 0 | |
| # 0 - 1 : 0 | |
| # 0 - 2 : 0 | |
| # 0 - 3 : 0 | |
| # 0 - 4 : 0 | |
| # 1 - 0 : 0 | |
| # 1 - 1 : 0 | |
| # 1 - 2 : 0 | |
| # 1 - 3 : 0 | |
| # 1 - 4 : 0 | |
| # 2 - 0 : 0 | |
| # 2 - 1 : 0 | |
| # 2 - 2 : 0 | |
| # 2 - 3 : 0 | |
| # 2 - 4 : 0 | |
| #增加第0列元素 | |
| m[0].append(10) | |
| #讀取矩陣 | |
| print("Result: ",m) | |
| # Result: [[0, 0, 0, 0, 0, 10], [0, 0, 0, 0, 0], [0, 0, 0, 0, 0]] |
4. 字典轉換成陣列或矩陣
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| #建立2x3矩陣 | |
| a = [[1,2,3],[4,5,6]] | |
| print("Result: ",a) | |
| # Result: [[1, 2, 3], [4, 5, 6]] | |
| #將 2x3 矩陣轉換成 dictionary, 並以每一個 row 的第一個值當成 key, 其餘為 value | |
| print("Matrix transforms into Dictionary") | |
| trans2dict = dict((x[0], (x[1],x[2])) for x in a[0:]) | |
| print("Result: ", trans2dict) | |
| # Result: {1: (2, 3), 4: (5, 6)} |
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