Evaluating Python as an Introductory Programming Language A. Thomas and H.L. Liang UNISA

1. Evaluating Python as an Introductory Programming Language A. Thomas and H.L. Liang UNISA

2. Contents • Introduction • Background • Aim of this study • Evaluation approach and findings • Conclusion • Future research

3. Introduction • Programming in Computer Science Curriculum • Aim of Introductory Programming • Difficulties associated with learning programming • Learning programming in distance education

4. Background • UNISA as an open and distance education institution • First-level Computer Science modules at UNISA • Focussing on the introductory programming module at UNISA - Objectives of the module - Implementation language - Learner Support - Pass rate

5. Aim of this study • To compare Python with C++ with respect to its syntax and structure • We do not aim to challenge the present module content and delivery techniques

6. Evaluation Approach and Findings • Approach used • Grouping of the results - Features of Python that will contribute to ease of learning - Features of Python that will not improve the ease of learning - Features of Python that could be problematic

7. Features of Python that will ease learning • Installation - How is it done now? - How can it be improved using Python? • Introduction to Programming - How is it done now? #include <iostream> (1) using namespace std; (2) int main(){ (3) cout<< “Hello World”; return 0; }

8. Continued.. - How can it be improved? print “Hello World” • Simplicity in Syntax - Examples in Python No need to declare variables Multiple initializations of variables in a single line Inclusion of useful expressions • Practice one concept at a time • Easier translation of a solution into implementation

9. Features of Python that will not improve ease of learning • Semantics to match expectations - meanings associated with ×, %, = - array indexing • Providing meaningful error messages • Practicalities of the IDE • Availability of on-line resources

10. Features of Python that could be problematic • Compilation vs. interpretation • Syntactical challenges - Readability -Indentation • Dynamic vs. static typing

11. Conclusion and further research • In this preliminary evaluation Python seems to have features that would ease the learning curve associated with learning a programming language • However, all the aspects of the introductory programming module should be considered before making a conclusive decision • The effect of including Python in the present curriculum should also be analysed