CheatsheetRead/Write Files
Text File
To read/write to a file in Python, you will want to use the with statement, which will close the file for you after you are done, managing the available resources for you.
Reading
python
with open('filename.txt') as file:
content = file.read()
You can also iterate through the file line by line:
python
with open('filename.txt') as file:
for line in file:
print(line, end='')
Writing
python
with open('filename.txt', 'w') as file:
file.write('Hello world!\n')
JSON
Reading
python
import json
with open("filename.json", "r") as file:
content = json.load(file)
Writing
python
import json
content = {"name": "Joe", "age": 20}
with open("filename.json", "w") as file:
json.dump(content, file, indent=4)
TOML
Reading
python
import toml
with open("filename.toml") as file:
content = toml.load(file)
Writing
python
import toml
content = {"name": "Joe", "age": 20}
with open("filename.toml", "w") as file:
toml.dump(content, file)
YAML
Reading
python
import yaml
with open("filename.yaml") as file:
content = yaml.load(file, Loader=yaml.FullLoader)
Writing
python
import yaml
content = {"name": "Joe", "age": 20}
with open("filename.yaml", "w") as file:
yaml.dump(content, file)