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yuannan_python

Yuannan J.

@yuannan_python

Python Automation Developer

China
Chinese, English
About me
Hello! I am a Python developer and a PhD candidate in Control Science and Engineering. My services include Excel and CSV cleaning, data comparison, batch file renaming, PDF merging and page extraction, image resizing and format conversion, and custom desktop applications using Python and Tkinter. I focus on clear requirements, reliable validation, safe file handling, readable source code, and straightforward communication. Please message me before ordering so that we can confirm the input files, expected output, and project scope.... Read more

Skills

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yuannan_python
Yuannan J.
Offline • 

See my services

Data Cleaning
I will clean merge and format excel or CSV data with python
From$15 / projectMore details
Desktop Applications
I will build a custom python desktop tool for batch file renaming
From$25 / projectMore details

Work experience

Self-Employed_/ Freelancer

Independent Python Developer

Self-Employed / Freelancer • Freelance

Aug 2026 - Present • 3 mos

Developed practical Python desktop tools for data and file-processing tasks, including Excel and CSV cleaning and comparison, batch file renaming, PDF merging and page extraction, image resizing and format conversion, and QR code generation. Built user-friendly interfaces with Tkinter and added input validation, error handling, preview functions, and safe output management. Focused on reliable operation, readable code, and clear documentation.

Baidu

Intern Programmer

Baidu • Part-time

Jun 2021 - Aug 2021 • 2 mos

Responsible for the development and debugging of core control algorithms for the painting robot, gaining a deep understanding of its working principles and motion control logic. Precisely controlled the robot's vertical movement speed by adjusting stepper motor parameters, significantly improving operational stability and efficiency. Optimized servo control logic to resolve issues with the spray gun's rotation, enhancing the uniformity and smoothness of the coating. Developed data acquisition algorithms for planar LiDAR, enabling real-time environmental perception and obstacle avoidance during construction.