主代码

xxx.py

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+import requests
+from lxml import etree
+import time
+base_url = 'https://www.runoob.com/python/python-exercise-example%s.html'
+
+
+def get_element(url):
+    headers = {
+        'cookie': '__gads=Test; Hm_lvt_3eec0b7da6548cf07db3bc477ea905ee=1573454862,1573470948,1573478656,1573713819; Hm_lpvt_3eec0b7da6548cf07db3bc477ea905ee=1573714018; SERVERID=fb669a01438a4693a180d7ad8d474adb|1573713997|1573713863',
+        'referer': 'https://www.runoob.com/python/python-100-examples.html',
+        'user-agent': 'Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/77.0.3865.90 Safari/537.36'
+    }
+    response = requests.get(url, headers=headers)
+    return etree.HTML(response.text)
+
+
+def write_py(i, text):
+    with open('练习实例%s.py' % i, 'w', encoding='utf-8') as file:
+        file.write(text)
+
+
+def main():
+    for i in range(1, 101):
+        html = get_element(base_url % i)
+        content = '题目：' + html.xpath('//div[@id="content"]/p[2]/text()')[0] + '\n'
+        fenxi = html.xpath('//div[@id="content"]/p[position()>=2]/text()')[0]
+        daima = ''.join(html.xpath('//div[@class="hl-main"]/span/text()')) + '\n'
+        haha = '"""\n' + content + fenxi + daima + '\n"""'
+        write_py(i, haha)
+        print(fenxi)
+        time.sleep(1)
+
+if __name__ == '__main__':
+
+    main()