TypeError：字符串对象不可调用

Question

我在第4行的TypeError上得到了这个print("I'm "+ ageStr +"years old.")，我已经尝试了f字符串，甚至是str(ageStr) / str(age)-我在第4行上仍然遇到相同的错误

ageStr = "24" #I'm 24 years old.
age = int(ageStr)

print("I'm "+ ageStr +"years old.")
three = "3"

answerYears = age + int(three)

print("The total number of years:" + "answerYears")
answerMonths = answerYears*12 

print("In 3 years and 6 months, I'll be " + answerMonths + " months old"

Answer 1

这是您解决错误的方法，

print("In 3 years and 6 months, I'll be " + str(answerMonths) + " months old")   

第二种解决方案是简单地删除字符串连接，

print("In 3 years and 6 months, I'll be ", answerMonths, " months old")   

Answer 2

要打印时，需要明确将类型int变量转换为str：

ageStr = "24" #I'm 24 years old.
age = int(ageStr)

print("I'm "+ ageStr +"years old.")
three = "3"

answerYears = age + int(three)

print("The total number of years:" + str(answerYears))
answerMonths = answerYears*12 

print("In 3 years and 6 months, I'll be " + str(answerMonths) + " months old")

输出：

I'm 24years old.                                                                                                      
The total number of years:27                                                                                          
In 3 years and 6 months, I'll be 324 months old