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What does the slash mean in help() output?
...nly Parameters
Positional-only parameters syntax was officially added to python3.8. Checkout what's new python3.8 - positional only arguments
PEP Related: PEP 570 -- Python Positional-Only Parameters
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How to pass a user defined argument in scrapy spider
...www.example.com/{category}'] # py36
super().__init__(**kwargs) # python3
def parse(self, response)
self.log(self.domain) # system
Taken from the Scrapy doc: http://doc.scrapy.org/en/latest/topics/spiders.html#spider-arguments
Update 2013: Add second argument
Update 2015: ...
Uber5岁了，一次性告诉你它的商业之道 - 资讯 - 清泛网 - 专注C/C++及内核技术
...，与同学合伙创办了Sour网站，这是一个提供流媒体交换下载的服务平台，网友之间可以交换音乐和电影视频。
或许只是偶然，这个网站从一诞生就触犯了美国版权保护法。1999年，Sour被30多家音乐、影视出版巨头联合起诉，索...
Argparse: Way to include default values in '--help'?
...er such as argparse.RawTextHelpFormatter at the same time:
#!/usr/bin/env python3
import argparse
class ArgumentParserWithDefaults(argparse.ArgumentParser):
def add_argument(self, *args, help=None, default=None, **kwargs):
if help is not None:
kwargs['help'] = help
...
App Inventor 2 中文网 · 项目指南
...帮助”菜单 -> AI伴侣信息，直接手机扫码安装到手机 或 下载AI伴侣到电脑并拖动到商业模拟器安装。 注：手机和电脑必须在同一局域网内，原理是电脑端启动WEB服务器，手机AI伴侣与WEB通信；电脑连手机热...
AsyncProcedures异步过程扩展 · App Inventor 2 中文网
...
AsyncProcedures异步过程扩展
下载和安装
开发动机
功能概述
使用场景
适用情况
典型应用案例
基本用法
异步执行过程
带参数...
MongoDB副本集详解 优于以往的主从模式 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...为MongoDB使用内存映射文件,所以必须使用64位版本。官方下载地址如下：http: www mongodb org downloads实验环境使用的Mongodb版本为mon 因为MongoDB使用内存映射文件,所以必须使用64位版本。
官方下载地址如下：http://www.mongodb.org/downloads...
How to sort objects by multiple keys in Python?
...)
In case you like your code terse.
Later 2016-01-17
This works with python3 (which eliminated the cmp argument to sort):
from operator import itemgetter as i
from functools import cmp_to_key
def cmp(x, y):
"""
Replacement for built-in function cmp that was removed in Python 3
C...
Why do people write the #!/usr/bin/env python shebang on the first line of a Python script?
...ween Python 2.x and Python 3.x, recent releases of Python 3 also provide a python3 name:
$ cat my_script.py
#!/usr/bin/env python3
import json
print("hello, json")
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How do I disable the security certificate check in Python requests
...session.get('https://wrong.host.badssl.com/', verify=False)
/usr/local/lib/python3.7/site-packages/urllib3/connectionpool.py:857: InsecureRequestWarning: Unverified HTTPS request is being made. Adding certificate verification is strongly advised. See: https://urllib3.readthedocs.io/en/latest/advance...