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Python

Python from your first script to code you can maintain. Start here if you have never programmed.

Any category Programming2 Python 1 SQL 1
Any topics Automation and Scripting 3 Data Structures and Algorithms 1 Object-Oriented Programming 1 Packaging and Dependencies 4 Performance Optimization 1 Programming Patterns 2 Testing and Debugging 3
Any level Intermediate 1 Advanced 4
Python Performance Optimization Intermediate Clear filters 1 result
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Reading a Large Text File in Python Line by Line

for line in file reads one line at a time, so a 10 GB file uses almost no memory. read() and readlines() load everything. Count, filter and stop early without building a list, and read in blocks when there are no lines.

6 min read