Python 如何检查当前日期并移动到下一个日期

我有一个python问题，我似乎无法理解。我不确定是否需要使用if语句，但因为我是python新手，所以我不确定如何编写这个小问题

事实上，这就是我面临的问题。对于出发日历，我希望python能够执行以下操作：

• 查看“你的约会”。如果有航班（无论是低票价还是普通票价），点击它。如果没有，则转到下一个有航班的可用日期并单击该日期
• 如果当前月份没有可用的日期，则需要能够移动到下个月（我有一个示例代码）

对于回程日历，我希望它做同样的事情，但确保它选择的日期至少比所选的出发日期晚7天

这实际上是我的问题，怎么做

下面是Deputure日历的html（返回日历与此完全相同，只是它是inboundsearchresults，而不是outbound SearchResults）：

下面我有一个示例代码，当您想使用该模板并对其进行操作时，从普通的日期选择器（这在url之前的页面中使用）中进行选择时可以使用该代码：

# select depart date
datepicker = driver.find_element_by_id("departure-date-selector")
actions.move_to_element(datepicker).click().perform()

# find the calendar, month and year picker and the current date
calendar = driver.find_element_by_id("departureDateContainer")
month_picker = Select(calendar.find_element_by_class_name("ui-datepicker-month"))
year_picker = Select(calendar.find_element_by_class_name("ui-datepicker-year"))
current_date = calendar.find_element_by_class_name("ui-datepicker-current-day")

# printing out current date
month = month_picker.first_selected_option.text
year = year_picker.first_selected_option.text
print("Current departure date: {day} {month} {year}".format(day=current_date.text, month=month, year=year))

# see if we have an available date in this month
try:
    next_available_date = current_date.find_element_by_xpath("following::td[@data-handler='selectDay' and ancestor::div/@id='departureDateContainer']")
    print("Found an available departure date: {day} {month} {year}".format(day=next_available_date.text, month=month, year=year))
    next_available_date.click()
except NoSuchElementException:
# looping over until the next available date found
        while True:
# click next, if not found, select the next year
            try:
                calendar.find_element_by_class_name("ui-datepicker-next").click()
            except NoSuchElementException:
# select next year
                year = Select(calendar.find_element_by_class_name("ui-datepicker-year"))
                year.select_by_visible_text(str(int(year.first_selected_option.text) + 1))

# reporting current processed month and year
                month = Select(calendar.find_element_by_class_name("ui-datepicker-month")).first_selected_option.text
                year = Select(calendar.find_element_by_class_name("ui-datepicker-year")).first_selected_option.text
                print("Processing {month} {year}".format(month=month, year=year))

            try:
                next_available_date = calendar.find_element_by_xpath(".//td[@data-handler='selectDay']")
                print("Found an available departure date: {day} {month} {year}".format(day=next_available_date.text, month=month, year=year))
                next_available_date.click()
                break
            except NoSuchElementException:
                continue

---

其思想是定义一个可重用的函数——调用它

select_date（）

，该函数接收一个“日历”WebElement和一个可选的最小日期。此函数将首先在日历中查找

您的日期

，如果该日期在日历中且超过最小值（如果给定），请单击该日期并返回日期。如果没有

您的日期

，请查找可用的“航班”天数，如果给出了最短日期且日期大于或等于该日期，请单击该日期并返回日期

工作执行：

from datetime import datetime, timedelta

from selenium import webdriver
from selenium.common.exceptions import NoSuchElementException
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC


def select_date(calendar, mininum_date=None):
    try:
        # check if "Your Date" is there
        your_date_elm = calendar.find_element_by_class_name("your-date")

        your_date = your_date_elm.get_attribute("data-date")
        print("Found 'Your Date': " + your_date)
        your_date_elm.click()

        # check if your_date against the minimum date if given
        your_date = datetime.strptime(your_date, "%Y-%m-%d")
        if mininum_date and your_date < mininum_date:
            raise NoSuchElementException("Minimum date violation")
        return your_date
    except NoSuchElementException:
        flight_date = None
        flight_date_elm = None
        while True:
            print("Processing " + calendar.find_element_by_css_selector("div.subheader > p").text)

            try:
                if mininum_date:
                    flight_date_elms = calendar.find_elements_by_class_name("flights")
                    flight_date_elm = next(flight_date_elm for flight_date_elm in flight_date_elms
                                           if datetime.strptime(flight_date_elm.get_attribute("data-date"), "%Y-%m-%d") >= mininum_date)
                else:
                    flight_date_elm = calendar.find_element_by_class_name("flights")
            except (StopIteration, NoSuchElementException):
                calendar.find_element_by_partial_link_text("Next month").click()

            # if found - print out the date, click and exit the loop
            if flight_date_elm:
                flight_date = flight_date_elm.get_attribute("data-date")
                print("Found 'Flight Date': " + flight_date)
                flight_date_elm.click()
                break

        return datetime.strptime(flight_date, "%Y-%m-%d")


driver = webdriver.Firefox()
driver.get("http://www.jet2.com/cheap-flights/leeds-bradford/antalya/2016-03-01/2016-04-12?adults=2&children=2&infants=1&childages=4%2c6")

wait = WebDriverWait(driver, 10)

# get the outbound date
outbound = wait.until(EC.visibility_of_element_located((By.ID, "outboundsearchresults")))
outbound_date = select_date(outbound)

# get the inbound date
inbound = driver.find_element_by_id("inboundsearchresults")
inbound_minimum_date = outbound_date + timedelta(days=7)
inbound_date = select_date(inbound, mininum_date=inbound_minimum_date)

print(outbound_date, inbound_date)

driver.close()

最后打印的两个日期是出发日期和返回日期

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如果您需要任何澄清，请告诉我，并希望它能有所帮助。

很好，我在短时间内有很多东西要学习，但有了您的脚本，我可以用它来帮助操作其他脚本。还有一个障碍我以后要处理，可能以后需要寻求您的帮助，但同时，非常感谢：）@bruceyband我很高兴看到您正在深入测试自动化。如果你需要进一步的帮助，请告诉我。

Processing March 2016
Found 'Flight Date': 2016-03-28

Processing April 2016
Found 'Flight Date': 2016-04-04

2016-03-28 00:00:00 2016-04-04 00:00:00