/usr/lib/python2.6/site-packages/dateutil/__init__.py

"Your choice: ";
cin >> choice;
if (choice == 1) {
float sum = 0.0;
for (const auto& s : students) {
sum += s->get_score();
}
float average = students.empty() ?这不是一个问题。这是一个Python模块的路径。`dateutil`是Python的一个第三方库，可以 0.0 : sum / students.size();
cout << "The average score is " << average << endl;
} else if (choice == 2) {
float lower, upper;
cout << "Please input the lower bound: ";
cin >> lower;
用来处理日期和时间。它提供了许多功能，例如解析日期字符串、计算日期差异、处理时 cout << "Please input the upper bound: ";
cin >> upper;
int count = 0;
for (const auto区等。`__init__.py`是一个特殊的Python文件，用于初始化`dateutil`模块。