Want to learn Python? Check out all the Python tutorials on PythonGuides.com. All these tutorials are written by Python experts with practical and real examples. Talk with our experts if you still have questions.
While building a reporting script, I often need more than the highest number. I also need its position so I can identify the matching product, date, or server. You can find the index of the maximum value in a Python array with max() and index(). For larger datasets, NumPy argmax() offers a faster and cleaner … Read more >>
When I build reporting scripts, I often receive records in oldest-to-newest order. Reversing the array lets me process the latest transactions, log entries, or sensor readings first. You can reverse an array in Python with slicing, reverse(), reversed(), a loop, the array module, or NumPy. The right option depends on whether you need a new … Read more >>
I once built a small leave-tracking script for a 10-person U.S. operations team. HR exported employee requests from Excel as a CSV file, but the script needed that data in memory before it could validate dates, count leave days, and create a weekly report. The first job was simple: read the file into an array … Read more >>
A few months back, I built a local app to track paid time off for my 10-person team. HR managed everything in Excel, and someone often missed an update or approved overlapping dates. I opened a Python file and considered how to store employees, PTO balances, and approval statuses. That is where I had to … Read more >>
I recently worked on a small HR leave management script for a 10-person company in Ohio. The HR coordinator tracked paid time off in Excel, but our Python script stored approved requests in a local SQLite database. One report returned leave balances in days, while payroll needed the same values in hours. That requirement sounds … Read more >>
A delivery company I worked with stored estimated driving times from its Dallas warehouse in a Python array. When a dispatcher entered a promised time, the script had to find the available route closest to that target. A request for 42 minutes, for example, should return the 40-minute route. This sounds simple until you encounter … Read more >>
A payroll script I built for a small U.S. company received employee badge IDs from several office locations. The combined data was already sorted, but some IDs appeared more than once. Those duplicates caused incorrect employee counts and extra payroll validation work. To remove duplicates from a sorted array in Python, I used the two-pointer technique. … Read more >>
Last month, I had to iterate through a 2D array in Python while building a paid time off app for a client’s 10-person US team. HR tracked requests in a shared Excel sheet, so I replaced it with a local Python app and SQLite database. The SQLite query returned a list of tuples, which works … Read more >>
I once helped a small U.S. company replace an HR leave tracker built in Excel. Ten employees emailed requests, one manager updated the workbook, and conflicting edits caused regular confusion. We first built a local Python leave request app that stored each request in an SQLite database. Once the app collected reliable data, HR wanted … Read more >>
I often start small automation scripts with a simple list. For example, when I build a local command-line app to track leave requests for a 10-person team, I need a place to collect employee names, requested dates, and approval statuses before saving anything. That is where knowing how to append to an array in Python … Read more >>
Download a FREE PDF (112 Pages) Containing 51 Useful Python Programs.
Download a FREE PDF on how to become a Python developer.