如何让 Python 回到要求输入的状态

Question

So I want the program to go back to asking for the input once it has completed.

I've asked this in reddit and gone through quite a many similar threads here and so far the answer seems to be loops if true perform x. But what is the command for the program to go back to asking for the input on line 5?

from selenium import webdriver
from selenium.webdriver.common.keys import Keys
from time import sleep

card = input()

driver = webdriver.Firefox()
driver.get("http://www.mtgprice.com/")
elem = driver.find_element_by_xpath("//form/input")
elem.send_keys(card) # input
driver.implicitly_wait(5) # seconds
driver.find_element_by_class_name('btn-blue').click()

Answer 1

Everyone you asked is pretty much right. Additionally I'd put the chunk of code in a function just because.

from selenium import webdriver
from selenium.webdriver.common.keys import Keys
from time import sleep

def web_stuff(card):
    driver = webdriver.Firefox()
    driver.get("http://www.mtgprice.com/")
    elem = driver.find_element_by_xpath("//form/input")
    elem.send_keys(card) # input
    driver.implicitly_wait(5) # seconds
    driver.find_element_by_class_name('btn-blue').click()


while loop_condition:
    card = input()
    web_stuff(card)

Answer 2

Since you don't say what you want to happen over and over again and if you ever want to stop, a starting point is just to put all the driver code into a loop:

from selenium import webdriver
from selenium.webdriver.common.keys import Keys
from time import sleep

while True:
    card = input()

    driver = webdriver.Firefox()
    driver.get("http://www.mtgprice.com/")
    elem = driver.find_element_by_xpath("//form/input")
    elem.send_keys(card) # input
    driver.implicitly_wait(5) # seconds
    driver.find_element_by_class_name('btn-blue').click()