python实现mask矩阵（根据列表所给元素）

╰+哭是因爲堅強的太久メ 2021-06-22 15:38 343阅读 0赞

> 行和列的位置都在以下三个列表中的一列中，则对应位置为1，其余位置全为0
> 
>  ——\[7-56,239-327,438-454,522-556,574-586\]
> 
>  ——\[57-85,96-112,221-238\]
> 
>  ——\[113-220,328-437,455-521,557-573\]

#### 代码实现 ####

def generateMaskBasedOnDom(dom_path, length):
        """ :param dom_path: this is a file path, which contains the following information: [7-56,239-327,438-454,522-556,574-586][57-85,96-112,221-238][113-220,328-437,455-521,557-573] each [...] means one domain :param length: this is the length of this protein :return: the mask matrix with size length x length, 1 means inner domain residue pair, otherwise 0 """
        # 读取文件
        with open(dom_path, "r", encoding="utf-8") as file:
            contents = file.readlines()
    
        # 获得mask位置数据
        list0 = []
        list1 = []
        list2 = []
        for list_idx, content in enumerate(contents):
            num_range_list = content.strip()[1:-1].split(",")
            for num_range in num_range_list:
                start_num = int(num_range.split("-")[0])
                end_num = int(num_range.split("-")[1])
                for num in range(start_num, end_num+1):
                    if list_idx == 0:
                        list0.append(num)
                    elif list_idx == 1:
                        list1.append(num)
                    else:
                        list2.append(num)
    
        mask = np.zeros((length, length))
        # 遍历矩阵每个元素
        for row in range(mask.shape[0]):
            for col in range(mask.shape[1]):
                if (row in list0 and col in list0) or (row in list1 and col in list1) or (row in list2 and col in list2):
                    mask[row][col] = 1
    
        return mask
    
    if __name__ == "__main__":
    
        # if no dom file ,please get dom file first
        with open("dom.txt", "w", encoding="utf-8") as f:
            f.write("[7-56,239-327,438-454,522-556,574-586]" + "\n" + "[57-85,96-112,221-238]" + "\n" + "[113-220,328-437,455-521,557-573]")
    
        file_path = "./dom.txt"
        protein_length = 1000   # mask_matrix size
        mask_matrix = generateMaskBasedOnDom(file_path, protein_length)
        print("*************Generate Mask Matrix Successful!*************")
    
        # 随机测试几组
        print(mask_matrix[7][56])  # 1
        print(mask_matrix[7][239])  # 1
        print(mask_matrix[8][57])   # 0
        print(mask_matrix[57][95])  # 0
        print(mask_matrix[113][573])  # 1