Python TypeError: 'int' object is not iterable求助：平均身高计算器异常

错误原因 #

出现 TypeError: 'int' object is not iterable 的直接原因是你尝试对整数进行循环遍历：

• total_height 初始化为整数 0，但你写了 for height in total_height，整数无法被迭代。
• number_of_students 同样初始化为整数 0，for student in number_of_students 也犯了相同错误。

修正方案 #

你需要遍历的是存储身高的列表 student_heights，而不是用来累加的整数变量。另外，统计学生数量可以直接用列表的长度 len()，比循环更简洁。

修正后的代码 #

student_heights = input("Input a list of student heights ").split()
for n in range(0, len(student_heights)):
    student_heights[n] = int(student_heights[n])

total_height = 0
# 遍历学生身高列表，累加总身高
for height in student_heights:
    total_height += height
print(total_height)

# 直接用len()获取学生数量，无需循环
number_of_students = len(student_heights)
print(number_of_students)

avg_height = round(total_height / number_of_students)
print(avg_height)

额外优化（可选） #

你还可以用Python内置的 sum() 函数和列表推导式进一步简化代码：

student_heights = input("Input a list of student heights ").split()
student_heights = [int(height) for height in student_heights]

total_height = sum(student_heights)
number_of_students = len(student_heights)
avg_height = round(total_height / number_of_students)

print(f"Total height: {total_height}")
print(f"Number of students: {number_of_students}")
print(f"Average height: {avg_height}")

内容的提问来源于stack exchange，提问作者Akshatdalal842