Standard Python string formatting may suffice.
# assume that your data rows are tuples
template = "{0:8}|{1:10}|{2:15}|{3:7}|{4:10}" # column widths: 8, 10, 15, 7, 10
print template.format("CLASSID", "DEPT", "COURSE NUMBER", "AREA", "TITLE") # header
for rec in your_data_source:
print template.format(*rec)
Or
# assume that your data rows are dicts
template = "{CLASSID:8}|{DEPT:10}|{C_NUM:15}|{AREA:7}|{TITLE:10}" # same, but named
print template.format( # header
CLASSID="CLASSID", DEPT="DEPT", C_NUM="COURSE NUMBER",
AREA="AREA", TITLE="TITLE"
)
for rec in your_data_source:
print template.format(**rec)
Play with alignment, padding, and exact format specifiers to get best results.
Answer from 9000 on Stack OverflowVideos
Standard Python string formatting may suffice.
# assume that your data rows are tuples
template = "{0:8}|{1:10}|{2:15}|{3:7}|{4:10}" # column widths: 8, 10, 15, 7, 10
print template.format("CLASSID", "DEPT", "COURSE NUMBER", "AREA", "TITLE") # header
for rec in your_data_source:
print template.format(*rec)
Or
# assume that your data rows are dicts
template = "{CLASSID:8}|{DEPT:10}|{C_NUM:15}|{AREA:7}|{TITLE:10}" # same, but named
print template.format( # header
CLASSID="CLASSID", DEPT="DEPT", C_NUM="COURSE NUMBER",
AREA="AREA", TITLE="TITLE"
)
for rec in your_data_source:
print template.format(**rec)
Play with alignment, padding, and exact format specifiers to get best results.
class TablePrinter(object):
"Print a list of dicts as a table"
def __init__(self, fmt, sep=' ', ul=None):
"""
@param fmt: list of tuple(heading, key, width)
heading: str, column label
key: dictionary key to value to print
width: int, column width in chars
@param sep: string, separation between columns
@param ul: string, character to underline column label, or None for no underlining
"""
super(TablePrinter,self).__init__()
self.fmt = str(sep).join('{lb}{0}:{1}{rb}'.format(key, width, lb='{', rb='}') for heading,key,width in fmt)
self.head = {key:heading for heading,key,width in fmt}
self.ul = {key:str(ul)*width for heading,key,width in fmt} if ul else None
self.width = {key:width for heading,key,width in fmt}
def row(self, data):
return self.fmt.format(**{ k:str(data.get(k,''))[:w] for k,w in self.width.iteritems() })
def __call__(self, dataList):
_r = self.row
res = [_r(data) for data in dataList]
res.insert(0, _r(self.head))
if self.ul:
res.insert(1, _r(self.ul))
return '\n'.join(res)
and in use:
data = [
{'classid':'foo', 'dept':'bar', 'coursenum':'foo', 'area':'bar', 'title':'foo'},
{'classid':'yoo', 'dept':'hat', 'coursenum':'yoo', 'area':'bar', 'title':'hat'},
{'classid':'yoo'*9, 'dept':'hat'*9, 'coursenum':'yoo'*9, 'area':'bar'*9, 'title':'hathat'*9}
]
fmt = [
('ClassID', 'classid', 11),
('Dept', 'dept', 8),
('Course Number', 'coursenum', 20),
('Area', 'area', 8),
('Title', 'title', 30)
]
print( TablePrinter(fmt, ul='=')(data) )
produces
ClassID Dept Course Number Area Title
=========== ======== ==================== ======== ==============================
foo bar foo bar foo
yoo hat yoo bar hat
yooyooyooyo hathatha yooyooyooyooyooyooyo barbarba hathathathathathathathathathat
Python's builtin JSON module can handle that for you:
>>> import json
>>> a = {'hello': 'world', 'a': [1, 2, 3, 4], 'foo': 'bar'}
>>> print(json.dumps(a, indent=2))
{
"hello": "world",
"a": [
1,
2,
3,
4
],
"foo": "bar"
}
import requests
import json
r = requests.get('http://server.com/api/2/....')
pretty_json = json.loads(r.text)
print (json.dumps(pretty_json, indent=2))
» pip install prettytable
Hi all
I'm trying to understand the usefulness of Pretty Print.
In automate the boring stuff it was used a few times earlier in the book to make things look 'prettier', it didn't really look much better to me but I assumed this was down to taste.
Now I just saw an actual use-case for it later in the book and it seems like a very convoluted method.
After importing pretty print, the format function can be used to convert a list to a string which makes it easier to write to a text doc and subsequently reimport (apparently). But you can just put 'str' in front of the list to achieve the same thing, so I fail to see the point.
Any ideas?
:\