如何检查嵌套抽象类的完整类型签名?在这个例子中
In [4]: from typing import Sequence
In [5]: IntSeq = Sequence[int]
In [6]: isinstance([1], IntSeq)
Out[6]: True
In [7]: isinstance([1.0], IntSeq)
Out[7]: True
我希望最后一个isinstance调用实际返回False,而它只检查参数是否为Sequence。我考虑过递归地检查类型,但是IntSeq没有存储嵌套类型的公共属性:
In [8]: dir(IntSeq)
Out[8]:
[&
当我在android棉花糖上测试我的应用程序时,打开它花了很长时间,并给出了以下错误
oat location is not valid
/data/user/0/org.linux.ceylon.gpstracker/cache/slice-support-annotations-24.2.1_6ad55f12288d69ec8a892bcf9d346762fe8110c1-classes.dex
oat location is not valid /data/user/0/org.linux.ceylon.gpstracker/cache/slice-slice_9-clas
我想在requirement.txt中缓存依赖项。参见https://docs.microsoft.com/en-us/azure/devops/pipelines/release/caching?view=azure-devops#pythonpip。这是我的azure-pipelines.yml # Python package
# Create and test a Python package on multiple Python versions.
# Add steps that analyze code, save the dist with the build record,
在尝试安装lazarus free pascal之后
broken packages
E: /var/cache/apt/archives/fp-units-rtl-3.0.0_3.0.0+dfsg-2_i386.deb: trying to overwrite '/usr/lib/fpc/3.0.0/units/i386-linux/rtl/si_c21g.ppu', which is also in package fpc 3.0.0
E: /var/cache/apt/archives/fp-compiler-3.0.0_3.0.0+dfsg-2_i386.deb: tr
又是我。我试图运行以下命令:sudo apt-get remove bitcoind,但我得到了以下响应:
Reading package lists... Done
Building dependency tree
Reading state information... Done
You might want to run 'apt-get -f install' to correct these:
The following packages have unmet dependencies:
linux-image-generic-hwe-16.04 :
我的软件中心停止更新我的软件,我得到了以下信息:
The following packages have unmet dependencies:
linux-headers-generic : Depends: linux-headers-3.2.0-57-generic but it is not installed
linux-headers-generic-pae : Depends: linux-headers-3.2.0-57-generic-pae but it is not installed
因此,我尝试了apt和-f安装,但没有收到以下消息:
(Reading databas
smmm@smmm-linux:/var/www/html$ composer create-project laravel/laravel test
Cannot create cache directory /home/smmm/.composer/cache/repo/https---packagist.org/, or directory is not writable. Proceeding without cache
Cannot create cache directory /home/smmm/.composer/cache/files/, or directory is no
我试图在Ubuntu16.04.2LTS上安装GoAccess (https://goaccess.io),我遵循本教程- https://www.vultr.com/docs/how-to-install-goaccess-on-ubuntu-16-04
所以当我按命令进去的时候-
sudo apt-get -y upgrade
它会让我跟着错误-
Reading package lists... Done
Building dependency tree
Reading state information... Done
You might want to run '
最近,我在下面的反向跟踪中遇到了一次崩溃:
gdb) bt
#0 0x41447f48 in do_lookup_x () from /auto/andpkg/rep_cache/wr-x86/3.0FCS/sysroot/lib/ld-linux.so.2
#1 0x4144821f in _dl_lookup_symbol_x () from /auto/andpkg/rep_cache/wr-x86/3.0FCS/sysroot/lib/ld-linux.so.2
#2 0x4144c4cb in _dl_fixup () from /auto/andpkg/rep_cache/w