Selecting a value from a drop-down option using selenium python

Adrian Ratnapala is right and also i would choose id over name, so you can try the following :

find_element_by_xpath("//select[@id='numReturnSelect']/option[@value='15000']").click()

OR

find_element_by_css_selector("select#numReturnSelect > option[value='15000']").click()

OR

you can use select_by_value(value) :

Select(driver.find_element_by_css_selector("select#numReturnSelect")).select_by_value(15000).click()

Click here for more info on Select.

from selenium.webdriver.support.ui import Select
driver = webdriver.Ie(".\\IEDriverServer.exe")
driver.get("https://test.com")
select = Select(driver.find_element_by_xpath("""//input[@name='n_name']"""))
select.select_by_index(2)
select.select_by_visible_text('Visible Text')
select.select_by_value('value')

It will work fine