# CSV & JSON Files — Python

Source: https://www.geekswithgeeks.com/en/python/py-csv-json

> The two most common structured data formats, handled by the standard library.

## Reading CSV

The `csv` module reads rows as lists (or dicts with `DictReader`) — no manual `split(",")` needed.

```python
import csv

with open("people.csv") as f:
    reader = csv.DictReader(f)
    for row in reader:
        print(row["name"], row["age"])
```

## Reading & writing JSON

`json.dumps`/`json.loads` convert between Python objects and JSON text; `json.dump`/`json.load` work directly with files.

```python
import json

data = {"name": "Ada", "skills": ["python", "math"]}
with open("data.json", "w") as f:
    json.dump(data, f, indent=2)

with open("data.json") as f:
    loaded = json.load(f)
print(loaded["skills"])
```