The python of delphi

Python 4 Delphi

Learn how Embarcadero’s newly released free Python modules bring the power and flexibility of Delphi’s GUI frameworks to Python. VCL and FireMonkey (FMX) are mature GUI libraries. VCL is focused on native Windows development, while FireMonkey brings a powerful flexible GUI framework to Windows, Linux, macOS, and even Android. This webinar will introduce you to these new free Python modules and how you can use them to build graphical users interfaces with Python. Part 2 will show you how to target Android GUI applications with Python!

What functionality does Python 4 Delphi provide?

• Low-level access to the python API
• High-level bi-directional interaction with Python
• Access to Python objects using Delphi custom variants (VarPyth.pas)
• Wrapping of Delphi objects for use in python scripts using RTTI (WrapDelphi.pas)
• Creating python extension modules with Delphi classes and functions

P4D makes it very easy to use python as a scripting language for Delphi applications. It also comes with an extensive range of demos and tutorials.

How Do I Use Python4Delphi?

The best way to learn about how to use Python for Delphi is to try the extensive range of demos available. Also studying the unit tests for VarPyth and WrapDelphi can help understand what is possible with these two units.

What Functionality Does Python 4 Delphi Provide and How Can It Enhance Your Programming Experience?

Python 4 Delphi (P4D) is an innovative framework that enables developers to leverage the power of Python alongside Delphi’s robust feature set. This powerful combination offers an array of functionalities, transforming the way developers can interact with these two languages. Let’s delve into the specifics of what Python 4 Delphi offers and how it can contribute to your programming projects.

What Does Low-Level Access to Python API Mean for Your Development Process?

P4D provides low-level access to the Python API. This feature means you can call Python’s C API directly from Delphi, enabling you to manipulate Python objects and utilize Python libraries natively within your Delphi code. This level of integration offers an unprecedented level of control and flexibility when working with Python within a Delphi context.

How Does High-Level Bi-Directional Interaction with Python Benefit You?

One of the standout features of P4D is its support for high-level bi-directional interaction with Python. But what does this mean for you as a developer? Simply put, you can execute Python scripts from Delphi and vice versa, allowing for a seamless integration of the two languages. This two-way communication leads to more efficient and dynamic code, as you can utilize the strengths of both languages within a single project.

Can You Access Python Objects Using Delphi Custom Variants?

Yes, you can! With P4D’s VarPyth.pas unit, you can access Python objects using Delphi custom variants. This functionality makes manipulating Python objects from Delphi as easy as handling native Delphi types. This simplifies the process of integrating Python and Delphi, making the development process more streamlined and efficient.

How Does Wrapping Delphi Objects for Use in Python Scripts Work?

P4D provides a feature to wrap Delphi objects for use in Python scripts. This is done using Delphi’s Run-Time Type Information (RTTI) via the WrapDelphi.pas unit. This means you can expose Delphi classes and methods to Python, effectively allowing you to script your Delphi applications using Python. This opens up a world of possibilities for integrating the power of Python scripting into your Delphi projects.

Can You Create Python Extension Modules with Delphi Classes and Functions?

Absolutely! P4D provides support for creating Python extension modules with Delphi classes and functions. This means you can extend the functionality of Python with your own Delphi code, creating custom modules that can be imported and used directly in Python. This opens up a new avenue for reusing your Delphi code, enhancing Python’s capabilities with the power and efficiency of Delphi.

Is Python 4 Delphi User-Friendly for Those Looking to Use Python as a Scripting Language for Delphi Applications?

Python 4 Delphi is designed with user-friendliness in mind, making it incredibly easy to use Python as a scripting language for Delphi applications. With its extensive range of demos and tutorials, P4D provides ample resources to get you started and to guide you through the process of integrating Python and Delphi.

Ready to get started with Python 4 Delphi a Powerful Tool for Python and Delphi Developers?

Considering the extensive functionality it provides, Python 4 Delphi proves to be a powerful tool for Python and Delphi developers alike. By seamlessly integrating the two languages, P4D offers developers the ability to harness the strengths of both Python and Delphi, leading to more versatile and dynamic applications. Whether you’re looking to extend Python with Delphi’s robustness or enrich your Delphi applications with Python’s flexibility, Python 4 Delphi is the toolkit you need.

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Introduction to Python GUI Development with Delphi for Python (VCL & FMX)

Learn how Embarcadero’s newly released free Python GUI modules bring the power and flexibility of Delphi’s GUI frameworks to Python. VCL and FireMonkey (FMX) are mature GUI libraries. VCL is focused on native Windows development, while FireMonkey brings a powerful flexible GUI framework to Windows, Linux, macOS, and even Android. This webinar will introduce you to these new free Python modules and how you can use them to build graphical users interfaces with Python. Part 2 will show you how to target Android GUI applications with Python!

Delphi’s DNA

1. Developer productivity – Really the main goal is getting things done quickly
2. Maintainability – Code is easy to read and understand with good encapsulation
3. Fast compiled native apps – Compiles fast, and native applications run fast
4. Database access – Always includes a rich set of database access components
5. Platform API access – You don’t need to call platform APIs, but can if you want
6. Property-Method-Event – General model for working with components
7. Visual designers – WYSIWYG with drag and drop interface
8. Reliable applications – Exception handling and component owner model
9. Backwards compatibility – Even with all the updates most code is compatible
10. 10.Rich component ecosystem – There is usually a component for everything

Zen of Python

19 “guiding principles” that influence the design of the Python programming language

Comparison (Delphi – Python)

Three Levels of Development (Universal to all development tools)

VCL (Visual Component Library for Microsoft Windows)

● Designed for Windows and evolving with each new Windows release supporting latest features, controls, themes, and design
● Full source ships with each release since Delphi 1
● Mostly a light wrapper around the native platform widgets and controls
● Includes a lot of “owner drawn” controls too
● Provides easy access to Windows Handles, Messages, etc.
● Greatly simplifies Windows development maintaining access to all platform features and APIs
● Native Windows look and feel with full theme system
● Mature platform with rich ecosystem of 3rd party components

FMX (The Cross-Platform FireMonkey Framework)

● Takes advantage of GPU libraries to provide a hardware accelerated, rich user interface that is fast and looks great across multiple platforms
● Similar to VCL, but not designed to be compatible
● Integrated GPU effects, animations, and robust styling system
● Platform services abstract the access to platform hardware and functionality to intelligently adapt the UI & UX to platform specifics
● Very flexible component system – do more with fewer components (nestable)

Short Delphi Tour

• Delphi isn’t required to use the Delphi for Python modules
• The IDE runs on Windows, but targets other platforms
• There are multiple editions and options to get started
• Free options – 30-day trial of RAD Studio Enterprise / Community Edition (some limitations apply)
• Three paid editions – Professional, Enterprise, and Architect
• Note: RAD Studio includes Delphi and C++Builder
• Find out more embarcadero.com/products/delphi

Delphi for Python

Delphi VCL for Python Installation

• Supports – Win32 & Win64 x86 architectures / Python cp3.6, cp3.7, cp3.8, cp3.9 and cp3.10
• Conda support – Win x86 and x64 from Python cp3.6 to cp3.10
• Install via pip: pip install delphivcl
• Details and downloads
  • github.com/Embarcadero/DelphiVCL4Python
  • pypi.org/project/delphivcl/

  Hello World (The simplest example)

  

  Example with Styles

  Design Your UI in the Delphi IDE

  • Take full advantage of the Delphi IDE designers and property editors
  • WYSIWYG preview with styles
  • Export the form for use in Python
  • Requires no Object Pascal knowledge
  • Still write all your code in Python
  • Just right-click and export with the DelphiVCL4Python IDE add-in
    • github.com/Embarcadero/DelphiVCL4Python/tree/main/samples/ActivityIndicator

    Combine Delphi and Python

    • The Python4Delphi library is a bidirectional bridge
    • Develop parts of your solution in Delphi, and part in Python
    • Play to the strengths of each
    • Merge them together into a single cohesive solution
    • Find samples, tutorials, and videos
      • github.com/pyscripter/python4delphi

      Use Delphi to Create Native Python Modules

      ● Many Python modules are written in C/C++ and natively compiled
      ● Delphi also creates natively compiled Python modules via Python4Delphi
      ● Prototype rapidly in Python, and then create optimized modules in Delphi to clear bottlenecks
      ● Much like Python, Delphi code is focused on readability and clear structure and may be easier for you than using C/C++
      ● Augment your use of PyPy or Cython

      Documentation and Library References

      • Main Delphi documentation
        • Main docwiki.embarcadero.com/RADStudio/en/
        • VCL docwiki.embarcadero.com/RADStudio/en/VCL_Overview
        • FMX docwiki.embarcadero.com/RADStudio/en/FireMonkey
        • Main docwiki.embarcadero.com/Libraries/en/
        • VCL docwiki.embarcadero.com/Libraries/en/Vcl
        • FMX docwiki.embarcadero.com/Libraries/en/FMX
        • TEdit in Delphi is an Edit in Python
        • It is just a naming convention

        About PyScripter

        • Popular free & open-source Python IDE sponsored by Embarcadero
        • All the features expected in a modern Python IDE while being lightweight and very fast
        • Natively compiled for Windows to use minimal memory with maximum performance
        • Full local and remote Python debugging
        • Integration with Python tools like PyLint, TabNanny, Profile, etc.
        • Run or debug files from memory.
          • embarcadero.com/free-tools/pyscripter/free-download

          About UltraEdit

          • High performance text editor for programmers.
          • Industry’s best large file handling: 10+ GB and beyond.
          • Syntax highlighting for nearly any language or data format.
          • Smart templates.
          • Hex editing. Column / block mode editing.
          • Part of Idera family of developer tools.
            • ultraedit.com/products/ultraedit/

            Next Steps

            • Install Delphi VCL for Python github.com/Embarcadero/DelphiVCL4Python
              • Star the repository, see the samples, file issues, and make feature requests
              • Jan 26th at 9 AM CST (Same registration as Part 1)

              Reduce development time and get to market faster with RAD Studio, Delphi, or C++Builder.
              Design. Code. Compile. Deploy.
              Start Free Trial Upgrade Today

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