from __future__ import print_function
small = 42
big = 1234567
print(small) # 42
print(big) # 1234567
print("{:,}".format(small)) # 42
print("{:,}".format(big)) # 1,234,567
We have imported the print_function from the
future
so this code will work on both Python 2 and Python 3.
The key here is the {:,} placeholder.
Commafy in Jinja and Flask
We can create new filters for Jinja and add them to the environment:
examples/python/jinja-commafy/generate_from_filesystem.py
from jinja2 import Environment, FileSystemLoader
import os
root = os.path.dirname(os.path.abspath(__file__))
env = Environment( loader = FileSystemLoader(root) )
env.filters['commafy'] = lambda v: "{:,}".format(v)
template = env.get_template('page.html')
print(template.render(
distance = 12345678,
))
In the template we can filter values using this new filter:
examples/python/jinja-commafy/page.html
{{ distance }}
{{ distance | commafy }}
The output will look like this:
12345678
12,345,678
