在“ python”中从另一个类调用变量

Question

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早上好，先生，我在从类JB（）和KL（）调用可变日期组时遇到问题，因为我想比较JB和KL中的组是否为1且JB（）== KL（）的日期，我想打印日期。 我已经尝试过该论坛的一些解决方案，但看来我失败了。

class JB(object):
    def __init__(self, date, timeslot, group):
        self.date = date
        self.timeslot = timeslot
        self.group = group

    def timetableJB(self):
        print(self.date)

tt1 = JB("8 Sept", (TS3_JB, TS4_JB, TS5_JB, TS6_JB), G1)
tt2 = JB("15 Sept", (TS3_JB, TS4_JB, TS5_JB, TS6_JB), G2)
tt3 = JB("22 Sept", (TS3_JB, TS4_JB, TS5_JB, TS6_JB), G3)

class KL(object):
    def __init__(self, date, timeslot, group):
        self.date = date
        self.timeslot = timeslot
        self.group = group

    def timetableKL(self):
        print(self.date, self.timeslot, self.group)

tt2 = KL("15 Sept", (TS1_KL, TS2_KL, TS3_KL), G1)
tt3_1 = KL("22 Sept", (TS1_KL, TS2_KL, TS3_KL), G2)
tt3_2 = KL("23 Sept", (TS4_KL, TS5_KL, TS6_KL), G3)

class PP(object):
    def __init__(self, date, timeslot, group):
        self.date = date
        self.timeslot = timeslot
        self.group = group

    def timetablePP(self):
        print(self.date, self.timeslot, self.group)

  tt3 = PP("22 Sept", (TS1_PP, TS2_PP, TS3_PP), G1)
  tt4_1 = PP("29 Sept", (TS1_PP, TS2_PP, TS3_PP), G2)
  tt4_2 = PP("30 Sept", (TS4_PP, TS5_PP, TS6_PP), G3)

print("")
print("Clash analysis for timetable KL and JB")

clashJB = JB()<----- I have error in this part
clashKL = KL()<----- I have error in this part
while clashJB.group and clashKL.group == G1:
    if clashJB.date == clashKL.date:
        print(clashJB.date)

Answer 1

您可能会收到错误消息，因为您尝试创建实例clashJB和clashKL而不传递必需参数date，times，group。 您需要将其创建为：

clashJB = JB(<date>, <timeslot>, <group>)
clashKL = KL(<date>, <timeslot>, <group>)

在执行比较操作之前。

如果您对类定义及其使用有任何疑问，可以浏览https://docs.python.org/2/tutorial/classes.html 。

Answer 2

以下代码按照您的期望工作。

class JB(object):
    def __init__(self, date, timeslot, group):
        self.date = date
        self.timeslot = timeslot
        self.group = group

    def timetableJB(self):
        print(self.date)

class KL(object):
    def __init__(self, date, timeslot, group):
        self.date = date
        self.timeslot = timeslot
        self.group = group

    def timetableKL(self):`enter code here`
        print(self.date, self.timeslot, self.group)

class PP(object):
    def __init__(self, date, timeslot, group):
        self.date = date
        self.timeslot = timeslot
        self.group = group

    def timetablePP(self):
        print(self.date, self.timeslot, self.group)

clashJB = JB(1,2,'G1')<---- Note the change
clashKL = KL(1,2,'G1')<-----Note the change


while clashJB.group and clashKL.group == 'G1':
    if clashJB.date == clashKL.date:
        print(clashJB.date)