我正在研究一个Python脚本,该脚本可根据用户输入来抓取网站。作为练习,我使用的是一个示例网站,我从该网站上抓取数据。我遇到的问题是使用wait(10)方法。代码如下:
from os import wait
from lxml import html, etree
import requests
def select_PA_city(self):
pa_city_list = ["Philadelphia", "Pittsburgh", "Harrisburg", "Erie", "Scranton", "Allentown"]
print("The major cities in Pennsylvania are Philadelphia, Pittsburgh, Harrisburg,"
"Erie, Scranton, and Allentown.")
city_found = False
while not city_found:
pa_city = input("Select a Pennsylvania city from this list:")
for city in pa_city_list:
if pa_city == city:
print("You selected " + pa_city)
city_found = True
else:
pass
if city_found:
print("That city is one of the top 6 listed.")
else:
print("That city (" + pa_city + "} is not in the top 6. Please try again.")
os.system.wait(10)
return pa_city
现在,我将PyCharm社区用作我的Python IDE,并且无法识别第一个import语句。我在c:\ Python38 \ Lib \目录中检查了os.py模块,但在该目录中找不到wait方法。如何在另一个Python模块中找到实际的wait()方法定义,或者是否存在另一个包含wait()方法的Python模块?如果没有,我应该使用哪种替代方法来启动10秒延迟?