Python for Delphi Developers - Part 1 Introduction

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PYTHON FOR DELPHI
DEVELOPERS
Webinar by Kiriakos Vlahos (aka PyScripter)
and Jim McKeeth (Embarcadero)

CONTENTS
Motivation and Synergies
Introduction to Python
Introduction to Python for Delphi
Simple Demo
TPythonModule
TPyDe...

PYTHON:
WHY
SHOULD I
(DELPHI
DEVELOPER)
CARE?
Massive increase in popularity
Language of choice for Data Analytics and Mac...

PYTHON-
DELPHI:
POTENTIAL
SYNERGIES
Gain access to Python libraries from your Delphi applications
Use Python as a scriptin...

POPULARITY OF PYTHON

PYTHON VS. JAVA
Interest over time (Google Trends)
Java
Python

DELPHI VS PYTHON
Delphi/Pascal Python
Maturity (1995/1970!) (1989)
Object orientation
Multi-platform
Verbosity High (begin...

PYTHON FOR DELPHI (I)
Low-level access to the
python API
High-level bi-directional
interaction with Python
Access to Pytho...

PYTHON FOR DELPHI (II)
• Delphi version support
• 2009 or later
• Platform support
• Windows 32 & 64 bits
• Linux
• MacOS
...

GETTING STARTED – INSTALLING
PYTHON
• Select a Python distribution
• www.python.org (official distribution)
• Anaconda (re...

GETTING STARTED – INSTALLING
PYTHON FOR DELPHI
• Clone or download and unzip the Github repository into a directory (e.g.,...

P4D COMPONENTS
Component Functionality
PythonEngine Load and connect to Python. Access to Python API (low-level)
PythonMod...

SIMPLE DEMO
(I)
SynEdit
Memo

SIMPLE DEMO
(II)
• All components are using default properties
• PythonGUIInputOutput linked to PythonEngine and
Memo
• So...

USING TPYTHONMODULE (I)
Python
def is_prime(n):
""" totally naive implementation """
if n <= 1:
return False
q = math.floo...

Python
def count_primes(max_n):
res = 0
for i in range(2, max_n + 1):
if is_prime(i):
res += 1
return res
def test():
max_...

USING TPYTHONMODULE (III)
• Add a TPythonModule to the form and link it to the PythonEngine
• ModuleName: delphi_module
• ...

Python
from delphi_module import delphi_is_prime
def count_primes(max_n):
res = 0
for i in range(2, max_n + 1):
if delphi_...

USING TPYTHONMODULE (V)
• Implement delphi_count_primes using TParallel.For
function CountPrimes(MaxN: integer): integer;
...

USING PYDELPHIWRAPPER
• PyDelphiWrapper allows you to expose Delphi objects, records and types using RTTI
and cusomised wr...

WRAPDELPHI DEMO31
• Shows you how you can create Delphi GUIs with Python
• Create forms
• Subclass Forms (and other Delphi...

CONCLUSIONS
• With Python for Delphi you can get the best of both worlds
• P4D makes it very easy to integrate Python into...

RESOURCES
• Python4Delphi library
• https://github.com/pyscripter/python4delphi
• PyScripter IDE
• https://github.com/pysc...

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