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Illegal mix of collations (utf8_unicode_ci,IMPLICIT) and (utf8_general_ci,IMPLICIT) for operation '=
...stead of (utf8_unicode_ci, IMPLICIT). i am scraping data off the web using python, then creating an CSV file with the scraped data, which i then process with a PHP file on my server that uploads the data to my database. all my MySQL tables/columns are collated as utf8mb4_unicode_ci. might the issue ...
Yes/No message box using QMessageBox
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If you want to make it in python you need check this code in your workbench.
also write like this.
we created a popup box with python.
msgBox = QMessageBox()
msgBox.setText("The document has been modified.")
msgBox.setInformativeText("Do you want to ...
How to manage local vs production settings in Django?
...dev.py, and you can override anything in __init__.py.
It's straightforward python. No re-import hacks.
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Coding Katas for practicing the refactoring of legacy code
...re interested enough in to keep working in. The last one I worked on was a python library for genetic programming, and the current one I'm working on is a IRC library for Java.
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Moving average or running mean
Is there a SciPy function or NumPy function or module for Python that calculates the running mean of a 1D array given a specific window?
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Binary Data in JSON String. Something better than Base64
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Python 3.4 includes base64.b85encode() and b85decode() now. A simple encode+decode timing measurement shows that b85 is more than 13 times slower than b64. So we have a 7% size win, but 1300% performance loss.
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逆向工程——二进制炸弹(CSAPP Project) - 操作系统(内核) - 清泛网 - 专注...
...翻看我的那几十页代码纸，企图人工计算出来。后来发现数据段的的值没有包含。终于，我开始想到了gdb这个工具。干嘛不在0x8048b22处设个断点，然后到时打印0x8049678地址中的值不就行了吗？终于的终于，最强调试器上场。
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Match linebreaks - \n or \r\n?
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In Python:
# as Peter van der Wal's answer
re.split(r'\r\n|\r|\n', text, flags=re.M)
or more rigorous:
# https://docs.python.org/3/library/stdtypes.html#str.splitlines
str.splitlines()
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What does a tilde do when it precedes an expression?
... you learn them they are not unclear. List comprehensions are not clear in Python if you don't know them and can be accomplished with more verbose loops but you'd never ask a Python programmer not to use them. Similarly value = value || default in JavaScript is a common and valid idiom as long as yo...
What's is the difference between train, validation and test set, in neural networks?
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its python :x i just cant get a stop criteria.. the values converge.. but always with some flutuation..
– Daniel
Jun 6 '10 at 15:42
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