How to replace a commas with periods in text for decimal numbers in python

Advertisements To replace commas with periods in text for decimal numbers in Python, you can use the `replace()` method of the `string` class. Here is an example of how you could do this: This will print the following output: Keep in mind that this will only work if the commas are used as decimal separators.… Read More How to replace a commas with periods in text for decimal numbers in python

Attempt to read property post_id on int

Advertisements I have a small response from db model, and i colud rebase it and response in route, but i see error. My Controller: class PostController extends Controller { public function getLastRecord() { $lastRec = Post::latest(‘created_at’)->first(); $res = []; $res = collect($lastRec)->map(function($record) { return [ ‘id’ => $record->post_id, ‘rec_name’ => $record->post_name, ‘user’ => $record->user_id, ];… Read More Attempt to read property post_id on int

getting elements with a queryset based on a left join in django

Advertisements I have two models: class A(models.Model): field1 = models.CharField(max_length=100) field2 = models.CharField(max_length=100) class B(models.Model): a_field = models.ForeignKey(null=True,blank=True,related_name=’a’,on_delete=models.SET_NULL) field2 = models.CharField(max_length=100) I want to get all of elements of model A which are not related to B. Here is the query I wrote but it doesn’t work: B.objects.select_related("a_field").filter(a_field__isnull=True) How can I solve this problem? >Solution… Read More getting elements with a queryset based on a left join in django

Trying to understand why my C++ program is slowing down after running for long time

Advertisements None of the threads close to the topic that I could find (like this one) helped me so far. I have a C++ program that reads some data from a file, runs pretty complex and intensive operations and then writes outputs to new files. When I let the process run for few hours, here… Read More Trying to understand why my C++ program is slowing down after running for long time

How to change selected value text color in DropdownButtonFormField?

Advertisements I am using dropdownbuttonformfield for creating dropdown. I need to change selected value text color white and dropdown items text color should be black as shown in image. I need to change color for image 1. image 1 image 2 >Solution : selectedItemBuilder: (context) { final List<DropdownMenuItem<String>> list = []; for (int i =… Read More How to change selected value text color in DropdownButtonFormField?

solving nested renamer is not supported with dynamic arguments

Advertisements if cat_vars: df["static_cat"] = ( df.groupby("group_col") .agg({i: "first" for i in cat_vars}) .values.tolist() ) Error: packages\pandas\core\groupby\generic.py in aggregate(self, func, *args, **kwargs) 926 func = _maybe_mangle_lambdas(func) 927 –> 928 result, how = self._aggregate(func, *args, **kwargs) 929 if how is None: 930 return result packages\pandas\core\base.py in _aggregate(self, arg, *args, **kwargs) 355 obj.columns.intersection(keys) 356 ) != len(keys):… Read More solving nested renamer is not supported with dynamic arguments