小编Mon*_*lal的帖子

命令"代码".在本手册中不起作用？

之前的所有其他步骤都有效.如何在OSX中调用终端中的Visual Studio？

Monas-MacBook-Pro:myExpressApp mona$ pwd
/Users/mona/nodejs/myExpressApp
Monas-MacBook-Pro:myExpressApp mona$ code .
-bash: code: command not found

编辑:我最终通过更改工作区从Visual Code Studio中打开它,但我想知道为什么该命令"代码".不行吗？

我想安装json2csv go get github.com/jehiah/json2csv但我收到此错误:

package github.com/jehiah/json2csv: cannot download, $GOPATH not set. For more details see: go help go path

有关如何在MacOS上解决此问题的任何帮助？

我在导入时收到以下错误pandas的Python程序

monas-mbp:book mona$ sudo pip install python-dateutil
Requirement already satisfied (use --upgrade to upgrade): python-dateutil in /System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python
Cleaning up...
monas-mbp:book mona$ python t1.py
No module named dateutil.parser
Traceback (most recent call last):
  File "t1.py", line 4, in <module>
    import pandas as pd
  File "/Library/Python/2.7/site-packages/pandas/__init__.py", line 6, in <module>
    from . import hashtable, tslib, lib
  File "tslib.pyx", line 31, in init pandas.tslib (pandas/tslib.c:48782)
ImportError: No module named dateutil.parser

还有这个程序:

import codecs 
from math import sqrt
import numpy …

Reader和InputStream有什么区别？什么时候用？如果我可以使用Reader读取字符,为什么我会使用inputstream,我想读取对象？

我不知道这笔交易是什么,但我遇到了一些无处可去的stackoverflow解决方案.你能帮帮我吗？

  Monas-MacBook-Pro:CS764 mona$ sudo python get-pip.py
    The directory '/Users/mona/Library/Caches/pip/http' or its parent directory is not owned by the current user and the cache has been disabled. Please check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag.
    The directory '/Users/mona/Library/Caches/pip/http' or its parent directory is not owned by the current user and the cache has been disabled. Please check the permissions and owner of that directory. If executing pip with sudo, …

我不知道如何解决这个问题:

dyn-72-33-214-45:python mona$ sudo /usr/local/mysql/bin/mysqld stop
2014-09-06 09:49:04 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).
2014-09-06 09:49:04 22992 [Warning] Setting lower_case_table_names=2 because file system for /usr/local/mysql-5.6.15-osx10.7-x86_64/data/ is case insensitive
2014-09-06 09:49:04 22992 [ERROR] Fatal error: Please read "Security" section of the manual to find out how to run mysqld as root!

2014-09-06 09:49:04 22992 [ERROR] Aborting

2014-09-06 09:49:04 22992 [Note] Binlog end
2014-09-06 09:49:04 22992 [Note] /usr/local/mysql/bin/mysqld: Shutdown …

我正在尝试按照Django教程,当我进入时遇到以下错误python manage.py makemigrations polls

Unknown command: 'makemigrations'

这是教程的链接,我成功地完成了所有以前的步骤,我不确定现在出了什么问题或如何解决它.PS:我已经在INSTALLED_APPS中加入了"民意调查"!

INSTALLED_APPS = (
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'polls',
    'South',
)

答:我必须将INSTALLED_APPS修改为:

INSTALLED_APPS = (
        'django.contrib.admin',
        'django.contrib.auth',
        'django.contrib.contenttypes',
        'django.contrib.sessions',
        'django.contrib.messages',
        'django.contrib.staticfiles',
        'polls',
    )

并且还使用了这个命令: python manage.py syncdb

我在Python中发现了这个用于删除表情符号的代码,但它无效.你能帮忙解决其他问题吗？

我已经观察到我的所有emjois都开始了\xf但是当我尝试搜索时str.startswith("\xf")我得到了无效的字符错误.

emoji_pattern = r'/[x{1F601}-x{1F64F}]/u'
re.sub(emoji_pattern, '', word)

这是错误:

Traceback (most recent call last):
  File "test.py", line 52, in <module>
    re.sub(emoji_pattern,'',word)
  File "/usr/lib/python2.7/re.py", line 151, in sub
    return _compile(pattern, flags).sub(repl, string, count)
  File "/usr/lib/python2.7/re.py", line 244, in _compile
    raise error, v # invalid expression
sre_constants.error: bad character range

列表中的每个项目都可以是单词 ['This', 'dog', '\xf0\x9f\x98\x82', 'https://t.co/5N86jYipOI']

更新:我使用了其他代码:

emoji_pattern=re.compile(ur" " " [\U0001F600-\U0001F64F] # emoticons \
                                 |\
                                 [\U0001F300-\U0001F5FF] # symbols & pictographs\
                                 |\
                                 [\U0001F680-\U0001F6FF] # transport & map symbols\
                                 |\
                                 [\U0001F1E0-\U0001F1FF] …

我正在按照本教程获得以下错误:

Severity Code Description Project File Line Suppression State
Error DEP0100 : Please ensure that target device has developer mode enabled. Could not obtain a developer license due to error 800704C7.

我不知道如何这样做Raspberry Pi 3(我已经将它公开IP在前面Target Machine的Debug选项卡Properties中solution explorer.我正在远程机器上进行调试,ARM如下面的屏幕截图所示.如果您有经验,任何信息都会受到特别赞赏使用Windows 10 IoT核心.

我的笔记本电脑正在运行Windows 10企业,我正在使用Visual Studio 2015社区版.我打算在已经运行Windows 10内幕版本的Raspberry Pi上远程运行MS IoT团队提供的Blinky示例.

os.path.curdir返回'.' 这完全是真实的,完全没有价值.要从中获得任何有用的东西,你必须用它包装os.path.abspath(os.path.curdir)

为什么在os.path模块中包含无用的变量？为什么不让os.path.curdir成为为你做os.path.abspath的函数？

存在一些历史原因os.path.curdir吗？

也许无用是有点苛刻,但不是很有用,似乎很难描述这一点.