技術標籤：Pythonpython

if __name__ == '__main__':

    # 一次性讀取檔案所有內容
    with open('temp.txt', 'r') as file:
        data = file.read()
        print(data)
    print('----------------------')
    file.close()

    # 按行讀取檔案
    with open('temp.txt', 'r') as file:
        line_index = 1
        while True
 
:
            data = file.readline()
            print('line %d: %s' % (line_index, data))
            line_index += 1
            if not data:
                break
    print('----------------------')
    file.close()

    # 一次性讀入所有行
    with open('temp.txt', 'r') as file:
        data_list = file.
 
readlines()
        print(data_list)

        # 刪除所有空行：從後向前遍歷，防止越界
        for index in range(len(data_list) - 1, -1, -1):
            data_list[index] = data_list[index].strip()
            if ''.__eq__(data_list[index]):
                data_list.pop(index)
        print(data_list)
    print('----------------------'
 
)
    file.close()

    # 向檔案中追加寫入
    with open('temp.txt', 'a+') as file:
        file.write('Hello world!')
    print('----------------------')
    file.close()

    pass