Question

我创建了一个文件，它将为文件创建数据，打印该文件，我现在正在尝试创建一个菜单程序，允许用户输入特定的颜色，然后该文件将打印出来该颜色的数据。我的代码如下：

def createFile(allColours):
    colours = open("colours","w")
    colours.write(str(allColours))
    colours.close()
    output()

def output():
    colours = open("colours","r")
    outputQuestion = input("Would you like the to see the output of the data for colours?(Y/N) \n")
    if outputQuestion == "Y" or outputQuestion == "y":
        for counter in range(4):
            print(colours.readline())
        colours.close()
    menu()




def data():
    allColours = []               
    allColours.append({"ID": "1", "Shade": "Black", "Red": "0", "Green": "0", "Blue":"0"})
    allColours.append ({"ID": "2", "Shade": "White", "Red": "255", "Green": "255", "Blue":"255"})
    allColours.append ({"ID": "3", "Shade": "Red", "Red": "255", "Green": "0", "Blue":"0"})
    allColours.append ({"ID": "4", "Shade": "Green", "Red": "0", "Green": "255", "Blue":"0"})
    allColours.append ({"ID": "5", "Shade": "Blue", "Red": "0", "Green": "0", "Blue":"255"})
    createFile(allColours)

def menu():
    colours = open("colours","r")
    whatColour = input("What colour would you like to be looked up?\n")
    if whatColour == "Black":
        print(colours[0])

正如def菜单（）显示的那样，我希望程序向用户询问要查找的颜色。例如，如果用户说黑色，程序应该打印该词典的详细信息。

我还想知道是否有一种方法使得在def output（）中，每个数据条目将被新行分割。目前，当我打印它时，它出现如下的长列表：

[{'ID': '1', 'Shade': 'Black', 'Red': '0', 'Green': '0', 'Blue': '0'}, {'ID': '2', 'Shade': 'White', 'Red': '255', 'Green': '255', 'Blue': '255'}, {'ID': '3', 'Shade': 'Red', 'Red': '255', 'Green': '0', 'Blue': '0'}, {'ID': '4', 'Shade': 'Green', 'Red': '0', 'Green': '255', 'Blue': '0'}, {'ID': '5', 'Shade': 'Blue', 'Red': '0', 'Green': '0', 'Blue': '255'}]

Answer 1

修改：未使用json的尝试：

def createFile(allColours):
    with open("colours","w") as colours_file:
        for colour in allColours:
            colours_file.write(str(colour))
            colours_file.write('\n')
    colours_file.close()
    output()

def output():
    outputQuestion = input("Would you like the to see the output of the data for colours?(Y/N) \n")
    if outputQuestion.lower() == "y":
    with open("colours","r") as colours_file:
        for colour in colours_file.readlines():
            print(colour, end='\r')
    colours_file.close()
    menu()

def data():
    allColours = []
    allColours.append ({"ID": "1", "Shade": "Black", "Red": "0", "Green": "0", "Blue":"0"})
    allColours.append ({"ID": "2", "Shade": "White", "Red": "255", "Green": "255", "Blue":"255"})
    allColours.append ({"ID": "3", "Shade": "Red", "Red": "255", "Green": "0", "Blue":"0"})
    allColours.append ({"ID": "4", "Shade": "Green", "Red": "0", "Green": "255", "Blue":"0"})
    allColours.append ({"ID": "5", "Shade": "Blue", "Red": "0", "Green": "0", "Blue":"255"})
    createFile(allColours)

def menu():
    colours_file = open("colours","r")
    whatColour = input("What colour would you like to be looked up?\n")
    for colour in colours_file.readlines():
        if whatColour in colour.partition("\'Shade\': ")[2]:
            print(colour)

data()

可能不熟悉或可能看似笨重的唯一部分是使用str.partition来查找与用户输入相匹配的颜色。

可以从文件Python3调用数据的菜单过程

1 个答案: