When comparing Kdevelop with kdev-python vs PyCharm Community Edition, the Slant community recommends PyCharm Community Edition for most people. In the question“What are the best Python IDEs or editors?” PyCharm Community Edition is ranked 3rd while Kdevelop with kdev-python is ranked 17th. The most important reason people chose PyCharm Community Edition is:
PyCharm has CVS, Git, Subversion and Mercurial integration.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Blazingly fast
PyCharm is amazing and easily the most feature option out there. But KDevelop is faster and has all the features needed for python develop. Opening new files, moving from file to file, code and syntax checks, everything happens instantly.
In the end the speed is what won me over to use KDevelop, when code is in my mind I don't want to wait on my IDE.
Pro Excellent syntax highlighting
Kdevelop has very smart syntax and semantic syntax highlighting.

Pro Real-time static analysis
Kdevelop has a pretty powerful and sophisticated implementation of static analysis for Python. It's capable of pretty good type inference, tracking types and the expected groking of inheritance trees.
Pro Best Vim bindings in an IDE
Most IDEs have very limited vim bindings, but KDevelop runs on the Kate editor. Kate is one of the most robust editors in the Linux world and is subsequently very functional. The Vim bindings are very close to complete with very few holes.
Pro Version control integration
PyCharm has CVS, Git, Subversion and Mercurial integration.
Pro Sophisticated autocompletion
PyCharm includes sophisticated heuristics for determining what each variable type is and providing autocompletion suggestions for them.
Pro Excellent refactoring support
There are many refactoring options including renaming and changing signature across entire projects. It also includes the an ability to preview changes before committing and exclude anything unwanted.
Pro Excellent debugger
PyCharm can leverage run-time information when running your application with the built-in debugger to figure out what types can possibly be passed to which functions, etc.
Pro Framework support
PyCharm supports cefpython and electron.js (with c bindings).
Pro Pro features Free for students
JetBrains offers a Student Pack, which gives you a student license and access to the pro features of selected products such as PyCharm, IntelliJ IDEA and Php Storm.
Cons
Con Works with no problems only on Linux
KDevelop is an IDE for the KDE platform. Even though it's cross-platform, it's mostly targeted at Linux systems and the versions for other operating systems are highly experimental.
Con Memory-hungry
Can use a lot of memory (several GBs), especially when dealing with large projects.
Con Can sometimes become very slow, freeze, and become unresponsive
It becomes extremely frustrating when you have to wait for the text you've typed to appear in your editor. Furthermore, during these freezes the editor does not always queue what your're typing, so you might have to wait > 15 seconds before you can continue your editing. This quickly affects the concentration of a developer, causing flow interruption and general performance degradation.
Con Feature incomplete
Some features are locked behind a paywall. Although if you are a student, you can apply for the Student Pack.
