SyntaxError: invalid character in identifier

使用py3常见的棘手的问题是，python编译时报错往往是不够准确的，对我这样用惯了java的人来说真是头痛啊，常常遇到这个问题，就记录一下吧，报错如下：

PS C:\Users\jiangcheng\Documents\Python Scripts> scrapy runspider mingyanSpider.py -o mingyan.json
2018-07-10 13:56:04 [scrapy.utils.log] INFO: Scrapy 1.5.0 started (bot: scrapybot)
2018-07-10 13:56:04 [scrapy.utils.log] INFO: Versions: lxml 4.2.1.0, libxml2 2.9.8, cssselect 1.0.3, parsel 1.4.0, w3lib 1.19.0, Twisted 17.5.0, Python 3.6.5 |Anaconda, Inc.| (default, Mar 29 2018, 13:32:41) [MSC v.1900 64 bit (AMD64)], pyOpenSSL 18.0.0 (OpenSSL 1.0.2o  27 Mar 2018), cryptography 2.2.2, Platform Windows-10-10.0.17134-SP0
Traceback (most recent call last):
  File "F:\Program\Anaconda3\Scripts\scrapy-script.py", line 10, in 
    sys.exit(execute())
  File "F:\Program\Anaconda3\lib\site-packages\scrapy\cmdline.py", line 150, in execute
    _run_print_help(parser, _run_command, cmd, args, opts)
  File "F:\Program\Anaconda3\lib\site-packages\scrapy\cmdline.py", line 90, in _run_print_help
    func(*a, **kw)
  File "F:\Program\Anaconda3\lib\site-packages\scrapy\cmdline.py", line 157, in _run_command
    cmd.run(args, opts)
  File "F:\Program\Anaconda3\lib\site-packages\scrapy\commands\runspider.py", line 80, in run
    module = _import_file(filename)
  File "F:\Program\Anaconda3\lib\site-packages\scrapy\commands\runspider.py", line 21, in _import_file
    module = import_module(fname)
  File "F:\Program\Anaconda3\lib\importlib\__init__.py", line 126, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "", line 994, in _gcd_import
  File "", line 971, in _find_and_load
  File "", line 955, in _find_and_load_unlocked
  File "", line 665, in _load_unlocked
  File "", line 674, in exec_module
  File "", line 781, in get_code
  File "", line 741, in source_to_code
  File "", line 219, in _call_with_frames_removed
  File "C:\Users\jiangcheng\Documents\Python Scripts\mingyanSpider.py", line 11
    '内容'：quote01.css('span.text::text').extract_first(),
               ^
SyntaxError: invalid character in identifier

虽然报的是单词不可用，但是看来看去代码很正常啊，但是本着小范围纠错的原则，在附近思考可能出现的问题，其中标点符号中英文的问题马上映入大脑，奇怪的是中英文冒号在vscode中看起来一模一样，难怪不容易发现。

改完之后完整代码如下：

import scrapy
class mingyanSpider(scrapy.Spider):
    name = "quotes"
    start_urls = [
        'http://lab.scrapyd.cn/',
    ]

    def parse(self,response):
        for quote01 in response.css('div.quote'):
            yield {
                '内容': quote01.css('span.text::text').extract_first(),
                '作者': quote01.xpath('span/small/text()').extract_first(),
            }
        next_page = response.css('li.next a::attr("href")').extract_first()
        if next_page is not None:
            yield scrapy.Request(next_page,self.parse)

赶紧运行：PS C:\Users\jiangcheng\Documents\Python Scripts> scrapy runspider mingyanSpider.py -o mingyan.json

运行成功了。