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How to check if a python module exists without importing it
...ING
When trying to find a submodule, it will import the parent module (for all of the above methods)!
food/
|- __init__.py
|- eggs.py
## __init__.py
print("module food loaded")
## eggs.py
print("module eggs")
were you then to run
>>> import importlib
>>> spam_spec = importli...
MySql安装配置 - 爬虫/数据库 - 清泛IT社区，为创新赋能！
...端，解压
2.安装Mysql服务：
进入bin目录，mysqld.exe --install (指定安装的MySql服务名)。
（卸载 net stop servicename;
mysqld.exe --remove servicename）
3.进入MySql命令模式：
mysql.exe（回车）
4.赋...
Change auto increment starting number?
In MySQL, I have a table, and I want to set the auto_increment value to 5 instead of 1 . Is this possible and what query statement does this?
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how to change any data type into a string in python
...lso, alternatively try repr:
mystring = repr(myvariable) # '4'
This is called "conversion" in python, and is quite common.
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Where do I set my company name?
...lt, Xcode inserts a company
name something similar to the
following in all new source files (.m
.h etc):
Copyright (c) 2009 MyCompanyName. All
rights reserved.
Changing this reference is as simple
as entering the following from within
a terminal window, replacing
“YourNameH...
How do I reset a sequence in Oracle?
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alter sequence serial restart start with 1;
This feature was officially added in 18c but is unofficially available since 12.1.
It is arguably safe to use this undocumented feature in 12.1. Even though the syntax is not included in the official documentation, it is generated by the Oracle pa...
How to check if an object is a generator object in python?
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@JAB, @Piotr: Reflected to address all the possibilities of what the OP can mean , thanks JAB :)
– mouad
Jun 20 '11 at 19:57
1
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When should I use C++ private inheritance?
...ance: This is NOT a complete answer. Read other answers like here (conceptually) and here (both theoretic and practic) if you are interested in the question. This is just a fancy trick that can be achieved with private inheritance. While it is fancy it is not the answer to the question.
Besides the...
How to extract a git subdirectory and make a submodule out of it?
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Nowadays there's a much easier way to do it than manually using git filter-branch: git subtree
Installation
NOTE git-subtree is now part of git (if you install contrib) as of 1.7.11, so you might already have it installed. You may check by executing git subtree.
To install...
Unmangling the result of std::type_info::name
... calling function. This should be relatively easy, standard C++ has a type_info class. This contains the name of the typeid'd class/function/etc. but it's mangled. It's not very useful. I.e. typeid(std::vector<int>).name() returns St6vectorIiSaIiEE .
...