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Asserting successive calls to a mock method
...unt
>>> m.assert_any_call(4)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "[python path]\lib\site-packages\mock.py", line 891, in assert_any_call
'%s call not found' % expected_string
AssertionError: mock(4) call not found
I find doing it...
How to deal with SettingWithCopyWarning in Pandas?
...or.
The solution
What you are doing in your code example is loading a big file with lots of columns, then modifying it to be smaller.
The pd.read_csv function can help you out with a lot of this and also make the loading of the file a lot faster.
So instead of doing this
quote_df = pd.read_csv(Stri...
How to force JS to do math instead of putting two strings together
...You have the line
dots = document.getElementById("txt").value;
in your file, this will set dots to be a string because the contents of txt is not restricted to a number.
to convert it to an int change the line to:
dots = parseInt(document.getElementById("txt").value, 10);
Note: The 10 here s...
Dependency Inject (DI) “friendly” library
...ructors work just fine with a connection string sitting in a configuration file somewhere.
If you ever work on WinForms components you deal with "services", like INameCreationService or IExtenderProviderService. You don't even really know what what the concrete classes are. .NET actually has its o...
Understanding slice notation
...h','o','n']
>>> p[2:3] = 't'
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: can only assign an iterable
The second rule of slice assignment, which you can also see above, is that whatever portion of the list is returned by slice indexing, t...
Javascript object Vs JSON
... use JSON if the "thing" needs to be generated on the server, and use a js file if the "thing" is just served as-is. The other big differentiator is whether you need to include functions and/or dates, as JSON can't represent them, so you must resort to serving a JS file. If you're still unsure, feel...
Git submodule update
...thin a branch. This is called having a detached head — it means the HEAD file points directly to a commit, not to a symbolic reference.
The issue is that you generally don’t want to work in a detached head environment, because it’s easy to lose changes.
If you do an initial submodule updat...
How to deselect a selected UITableView cell?
...wift 4 and Swift 5:
Swift extension (e.g. in a UITableViewExtension.swift file):
import UIKit
extension UITableView {
func deselectSelectedRow(animated: Bool)
{
if let indexPathForSelectedRow = self.indexPathForSelectedRow {
self.deselectRow(at: indexPathForSelectedRo...
C# Xml中SelectSingleNode方法中的xpath用法（Xml节点操作最佳方式） - 更...
...ode = objNodeChild.NextSibling;
genderNode.InnerXml = "male"
objDoc.Save(file);
4、参考数据
<?xml version="1.0" encoding="UTF-8"?>
<Company>
<Department>
<Department_Name>Cai WuBu</Department_Name>
<Manager>Zhang Bin</Manager>
<Employees>
<Employee>
<Employee_ID>1...
C# Xml中SelectSingleNode方法中的xpath用法（Xml节点操作最佳方式） - 更...
...ode = objNodeChild.NextSibling;
genderNode.InnerXml = "male"
objDoc.Save(file);
4、参考数据
<?xml version="1.0" encoding="UTF-8"?>
<Company>
<Department>
<Department_Name>Cai WuBu</Department_Name>
<Manager>Zhang Bin</Manager>
<Employees>
<Employee>
<Employee_ID>1...