datafiles | A file-based ORM for Python dataclasses | Serialization library

by jacebrowning Python Version: 2.2b1 License: MIT

X-Ray Key Features Code Snippets Community Discussions(10)Vulnerabilities Install Support

kandi X-RAY | datafiles Summary

datafiles is a Python library typically used in Utilities, Serialization applications. datafiles has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. However datafiles build file is not available. You can install using 'pip install datafiles' or download it from GitHub, PyPI.

Take an existing dataclass such as this example from the documentation:.

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Quality

Security

License

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Support

datafiles has a low active ecosystem.

It has 178 star(s) with 18 fork(s). There are 8 watchers for this library.

There were 1 major release(s) in the last 12 months.

There are 8 open issues and 82 have been closed. On average issues are closed in 58 days. There are 1 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of datafiles is 2.2b1

Quality

datafiles has 0 bugs and 0 code smells.

Security

datafiles has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

datafiles code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

datafiles is licensed under the MIT License. This license is Permissive.

Permissive licenses have the least restrictions, and you can use them in most projects.

Reuse

datafiles releases are available to install and integrate.

Deployable package is available in PyPI.

datafiles has no build file. You will be need to create the build yourself to build the component from source.

Installation instructions, examples and code snippets are available.

datafiles saves you 1580 person hours of effort in developing the same functionality from scratch.

It has 3513 lines of code, 387 functions and 43 files.

It has low code complexity. Code complexity directly impacts maintainability of the code.

Top functions reviewed by kandi - BETA

kandi has reviewed datafiles and discovered the below as its top functions. This is intended to give you an instant insight into datafiles implemented functionality, and help decide if they suit your requirements.

Convert deserialized data into a Python value
Returns the default value for the given field name
Return the path to this instance
Resolve an annotation
Generate a datafile from a filename
Create a datafile model
Decorator to create a model
Context manager to temporarily disable objects
Register a converter
Deserialize from a file - like object
Read a file
Make a nested dictionary

Get all kandi verified functions for this library.

datafiles Key Features

No Key Features are available at this moment for datafiles.

datafiles Examples and Code Snippets

No Code Snippets are available at this moment for datafiles.

Community Discussions

Trending Discussions on datafiles

Is the content of each datafile in the same tablespace the same in Oracle database?

Iterating over string in for loop

Adding multiple rows or column in body

C# compile error Use of unassigned local variable

Looking for examples of Bazel genrules that generate data files

How do I assign a open workbook and worksheet to variables?

How to move a column to the end?

Update-Database fails on foreign key conflict

Can I join two files by a matching column in fortran?

setuptools with data in a folder above the tool folder

QUESTION

Is the content of each datafile in the same tablespace the same in Oracle database?

Asked 2021-Jun-14 at 19:39

On Oracle 12c, is the content of each datafile belonging to a single tablespace the same?

If yes, is it because of performance or backup purpose thus recommanding us to store each datafile on different drives?

If no then why would we create multiple datafiles for a single tablespace when we can autoextend each datafile?

...

ANSWER

Answered 2021-Jun-14 at 19:39

No. The idea of multiple datafiles supporting a single tablespaces is to be able to use striping. This ofcourse only makes sense if your server has multiple physical storage devices that preferably also have their own io interface.

À table will be in the tablespaces and can allocate space in all available datafiles. So the table data can be in all datafiles.

If your io system does not consist of multiple physical devices you might as well use a bigfile tablespace that just has one big datafile. In older releases this was a restore nightmare because the backup and restore was performed file by file.

Source https://stackoverflow.com/questions/67974585

QUESTION

Iterating over string in for loop

Asked 2021-May-26 at 14:59

I have a lot of data files with the following structure,

datafile_1.txt

...

ANSWER

Answered 2021-May-26 at 14:59

I think you meant to make some dicts to hold your data in:

Source https://stackoverflow.com/questions/67707458

QUESTION

Adding multiple rows or column in body

Asked 2021-May-19 at 15:03

Hi trying to figure out why my hamburger is getting misaligned when i add another Expanded() code within the body.

I tried to follow this url to develop a hamburger menu and responsive for all platforms at once. Flutter Blog

Below is the code that i tried where i added Expanded() below the Row()

...

ANSWER

Answered 2021-May-19 at 14:28

Because Expanded fills up the whole space and that's why your hamburger is getting misaligned. Why don't you try using appbar for the hamburger?

Source https://stackoverflow.com/questions/67605124

QUESTION

C# compile error Use of unassigned local variable

Asked 2021-May-17 at 21:40

Error: Use of unassigned local variable 'Datafiles'

I know this question is asked several times, but I don't see anything that suits my requirement. please help!

From the following code to check if files exists, I'm getting the following error, any suggestion on how to fix it, I've already included system.IO on top in namespaces

...

ANSWER

Answered 2021-May-17 at 21:38

You never assign anything to DataFiles. Try initializing it with an array size and populating those indexes, or assigning an array to it. E.G

Source https://stackoverflow.com/questions/67577243

QUESTION

Looking for examples of Bazel genrules that generate data files

Asked 2021-May-12 at 22:52

I wanted to make a BUILD rule that depends on a data file which is generated from other files. I tried to write something like this:

...

ANSWER

Answered 2021-May-12 at 22:52

Some things to keep in mind when writing genrules:

A genrule needs to know all its input files and output files (srcs and outs attributes)
It needs to know the tools it's going to use in the command (exec_tools attribute). These tools can be other things that need to be built, like binary targets (cc_binary, java_binary, sh_binary, py_binary, etc), or they can be pre-compiled binaries.
The tools have to produce the same files that the genrule declares in the outs attribute. It's often easier to declare the files in the outs attribute and then pass the file names to the tool using $(OUTS) in the cmd attribute.

See the documentation for genrule, which includes some simple examples: https://docs.bazel.build/versions/master/be/general.html#genrule

It would look something like this:

Source https://stackoverflow.com/questions/67461251

QUESTION

How do I assign a open workbook and worksheet to variables?

Asked 2021-May-12 at 22:29

Trying to create a script that will open a directory, select the file and assign the workbook name and worksheet name to variables. When the workbook opens the file, I'm trying to get VBA to assign that file to a variable along with the first worksheet.

...

ANSWER

Answered 2021-May-12 at 22:29

Set the object when you open it. You will need the know the filename from the wildcard, so use the Dir function for that. Note the Dir function returns only a filename and not a path for it.

Source https://stackoverflow.com/questions/67511084

QUESTION

How to move a column to the end?

Asked 2021-May-12 at 17:06

I am trying to align column with text to far right side of the window but somehow its not happening.

Tried with MainAxisAlignment.right , CrossAxisAlignment.right but somehow nothing is working out for me. Below is my Dart code,

...

ANSWER

Answered 2021-May-12 at 17:06

While you are using the Row widget,

Add mainAxisAlignment: MainAxisAlignment.spaceBetween to it.

So your code should be like this

Source https://stackoverflow.com/questions/67507725

QUESTION

Update-Database fails on foreign key conflict

Asked 2021-May-10 at 21:45

I've an application which uses Entity Framework. It contains several migration files which do various database operations. Another user has been making updates directly to the database and now I can't get one of my migrations to apply when I run Update-Database. This is the error I get:

PM> Update-Database Build started... Build succeeded. Failed executing DbCommand (56ms) [Parameters=[], CommandType='Text', CommandTimeout='30'] ALTER TABLE [Balance1Part] ADD CONSTRAINT [FK_Balance1Part_Balance1_Balance1Id] FOREIGN KEY ([Balance1Id]) REFERENCES [Balance1] ([Id]) ON DELETE CASCADE; fail: Microsoft.EntityFrameworkCore.Database.Command[20102] Failed executing DbCommand (56ms) [Parameters=[], CommandType='Text', CommandTimeout='30'] ALTER TABLE [Balance1Part] ADD CONSTRAINT [FK_Balance1Part_Balance1_Balance1Id] FOREIGN KEY ([Balance1Id]) REFERENCES [Balance1] ([Id]) ON DELETE CASCADE; Microsoft.Data.SqlClient.SqlException (0x80131904): The ALTER TABLE statement conflicted with the FOREIGN KEY constraint "FK_Balance1Part_Balance1_Balance1Id". The conflict occurred in database "db-vrhit05042021", table "dbo.Balance1", column 'Id'. at Microsoft.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection, Action1 wrapCloseInAction) at Microsoft.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection, Action1 wrapCloseInAction) at Microsoft.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj, Boolean callerHasConnectionLock, Boolean asyncClose) at Microsoft.Data.SqlClient.TdsParser.TryRun(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj, Boolean& dataReady) at Microsoft.Data.SqlClient.SqlCommand.RunExecuteNonQueryTds(String methodName, Boolean isAsync, Int32 timeout, Boolean asyncWrite) at Microsoft.Data.SqlClient.SqlCommand.InternalExecuteNonQuery(TaskCompletionSource1 completion, Boolean sendToPipe, Int32 timeout, Boolean& usedCache, Boolean asyncWrite, Boolean inRetry, String methodName) at Microsoft.Data.SqlClient.SqlCommand.ExecuteNonQuery() at Microsoft.EntityFrameworkCore.Storage.RelationalCommand.ExecuteNonQuery(RelationalCommandParameterObject parameterObject) at Microsoft.EntityFrameworkCore.Migrations.MigrationCommand.ExecuteNonQuery(IRelationalConnection connection, IReadOnlyDictionary2 parameterValues) at Microsoft.EntityFrameworkCore.Migrations.Internal.MigrationCommandExecutor.ExecuteNonQuery(IEnumerable`1 migrationCommands, IRelationalConnection connection) at Microsoft.EntityFrameworkCore.Migrations.Internal.Migrator.Migrate(String targetMigration) at Microsoft.EntityFrameworkCore.Design.Internal.MigrationsOperations.UpdateDatabase(String targetMigration, String contextType) at Microsoft.EntityFrameworkCore.Design.OperationExecutor.UpdateDatabaseImpl(String targetMigration, String contextType) at Microsoft.EntityFrameworkCore.Design.OperationExecutor.UpdateDatabase.<>c__DisplayClass0_0.<.ctor>b__0() at Microsoft.EntityFrameworkCore.Design.OperationExecutor.OperationBase.Execute(Action action) ClientConnectionId:b538f2ff-0a95-4975-ab15-ed75eca72382 Error Number:547,State:0,Class:16 The ALTER TABLE statement conflicted with the FOREIGN KEY constraint "FK_Balance1Part_Balance1_Balance1Id". The conflict occurred in database "db-vrhit05042021", table "dbo.Balance1", column 'Id'.

The migration I'm looking to apply here should add the foreign key FK_Balance1Part_Balance1_Balance1Id and that foreign key doesn't seem to exist on the database. How can I resolve this issue?

I'm trying to do this on an Azure SQL Server instance.

Here's the migration:

...

ANSWER

Answered 2021-May-10 at 21:45

I would say that this error occurred because you tried to add a foreign key from Balance1Part.Balance1Id to Balance1.Id but some values in Balance1Part.Balance1Id don't match any in Balance1.Id. It should be impossible to create a relation that violates referential integrity. Try checking for missing keys in Balance1Part:

Source https://stackoverflow.com/questions/67477436

QUESTION

Can I join two files by a matching column in fortran?

Asked 2021-May-07 at 15:24

I am new at using fortran. Can I somehow join two datafiles by matching columns?

I am trying to join two data files. The first one has 100.000 records where each line represents one person. The second file has 400.000 records where a person in the first file can appear multiple times. The first column in both files has a unique ID of each person

I want to join the files by the first column and add information from file 1 to file 2... so the new file will have 400.000 lines with added information about each person from datafile1.

This is the code I have tried writing:

...

ANSWER

Answered 2021-May-07 at 15:24

The expression einsts==einstg is trying to compare the two arrays element-wise, but the arrays are of different lengths so this doesn't work. Instead, you want to compare the relevant elements, using einsts(i)==einstg(j).

One thing I should point out: you are currently reading saedingar.txt 105161 times. This is likely to be quite slow. Instead, I would recommend reading the file once and then looping over the data multiple times, e.g. as:

Source https://stackoverflow.com/questions/67406528

QUESTION

setuptools with data in a folder above the tool folder

Asked 2021-Mar-19 at 16:31

I have a toolbox that has support in 2 languages, so the structure is as:

...

ANSWER

Answered 2021-Mar-19 at 16:31

Easiest way is to give the relative path, but provide where to put it:

Source https://stackoverflow.com/questions/66707284

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install datafiles

Because datafiles relies on dataclasses and type annotations, Python 3.7+ is required. Install this library directly into an activated virtual environment:.