类PatientManagement有3个方法
1. add_patient 添加一个新病人（属于类 Patient）。病人对应一个ID，第一个ID为0，第二个为1，以此类推
2. get_patient 返回病人的ID
3.get_statistics 返回女病人和男病人的数量，以及平均BMI
病人和ID以字典的方式储存在变量 patients 中，以{id: Patient}形式，最后一个使用的ID储存在变量 last_used 中。
类 Patient 有两个方法
1. to_string 打印 名 姓 出生日 月 年 性别 身高（cm）体重（kg）
2. get_bmi 计算这个病人的BMI，BMI = weight in KG / (height in M)²
get_statistics调用get_bmi 且不再进行一变BMI计算
运行结果是这样
class Patient(object):
def __init__(self, first_name, last_name, birth_year, birth_month, birth_day, sex, body_height, body_weight):
self.first_name = first_name
self.last_name = last_name
self.year = birth_year
self.month = birth_month
self.day = birth_day
self.sex = sex
self.height = body_height
self.weight = body_weight
def to_string(self):
print("Name: {} {}, geboren am {}.{}.{}, geschlecht:{}, {}cm, {}kg".format(self.first_name, self.last_name, self.day, self.month, self.year, self.sex, self.height, self.weight))
def get_bmi(self):
return self.weight / ((self.height/100) ** 2)
a =[]
b = []
patients = {}
i = 0
class PatientManagement(Patient):
fpCount = 0
mpCount = 0
def add_patient(self):
patients[i] = Patient()
i += 1
if self.sex == f:
PatientManagement.fpCount += 1
if self.sex == m:
PatientManagement.mpCount += 1
for k in patients.keys():
a.append(k)
b.append(patients[k])
last_used = a[-1]
def get_patient(self):
new_dict = {v:k for k,v in patients.items()}
patient_id = new_dict[Patient()]
return patients_id
def get_statistics(self):
bmi = []
for patient in b:
bmi.append(patient.get_bmi())
avg_bmi = np.mean(bmi)
return "female Patients:{}, male Patients:{}, average BMI: {}".format(PatientManagement.fpCount, PatientManagement.mpCount, avg_bmi)
p1 = Patient("Meier", "Lena", 1988, 12, 12, 'f', 164, 50)
pm1 = PatientManagement(p1)
pm1.add_patient()
pm1.get_patient()
这里报错是问题在哪里?
---------------------------------------------------------------------------
TypeError Traceback (most recent call last)
<ipython-input-141-ebb011904724> in <module>()
1 p1 = Patient("Meier", "Lena", 1988, 12, 12, 'f', 164, 50)
----> 2 pm1 = PatientManagement(p1)
3 pm1.add_patient()
4 pm1.get_patient()
TypeError: __init__() missing 7 required positional arguments: 'last_name', 'birth_year', 'birth_month', 'birth_day', 'sex', 'body_height', and 'body_weight'
