如何查看当前日期并移至下一个日期 [英] How to check current date and move to next date

问题描述

我遇到了我似乎无法理解的python问题.不知道是否需要使用if语句，但是因为我是python的新手，所以我实际上不确定如何编写这个小问题.

I'm having a python issue which I cannot seem to understand. Not sure if I need to use if statements but because I'm new to python, I'm not actually sure how to code this little issue.

实际上这是我遇到的问题.对于出发日历，我希望python能够执行以下操作:

Virtually this is the issue I have. For the departure calendar, I want python to be able to do the following:

• 查看您的日期".如果有航班(低价或正常都没关系)，请单击它.如果没有，请移至下一个有航班的可用日期，然后单击该日期.
• 如果当前月份没有可用的日期，则需要能够移至下个月(我有一个示例代码).

对于回程日历，我希望它执行相同的操作，但要确保它选择的日期比所选的出发日期至少晚7天.

For the return calendar, I want it to do the same thing but ensure it selects a date at least 7 days after the selected departure date.

这实际上是我的问题，该怎么做?

That's virtually my question, how to do that?

下面是发送日历的html(返回日历与入站日历完全相同，只是它的入站搜索结果而不是出站搜索结果):

Below is the html of the depature calendar (return calendar is exactly the same except it's inboundsearchresults rather than outbound search results):

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，可以从普通的日期选择器(在url之前的页面中使用)中进行选择:

Below I have a sample code which works when selecting from an ordinary date picker (this is used in the page before the url) if you want to use that template and manipulate it:

# 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

推荐答案

这个想法是定义一个可重用的函数-调用它为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Your date，如果它存在并且大于最小值(如果给定)，请单击它并返回日期.如果没有Your date，请查找可用的飞行"天数；如果给出了最小日期，并且该日期大于或等于该日期，则单击它并返回日期.

The idea is to define a reusable function - calling it select_date() that receives a "calendar" WebElement and an optional minimum date. This function would first look for the Your date in the calendar and if it is there and it is more than minimum (if given) click it and return the date. If there is no Your date, look for the available "flight" days and, if minimum date is given and the date is more than or equal to it, click it and return the date.

有效的实现方式

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()

对于问题URL中提供的内容，它会打印:

For the provided in the question URL, it prints:

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

最后打印的两个日期是出发日期和返回日期.

The two dates printed at the end are the departure and the return dates.

让我知道您是否需要任何澄清，希望对您有所帮助.

Let me know if you need any clarifications and hope it helps.

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