如何在Python中漂亮地打印深度为~4的字典?我尝试用pprint()进行漂亮的打印,但它不起作用:
import pprint
pp = pprint.PrettyPrinter(indent=4)
pp.pprint(mydict)
我只是想要一个缩进(“\t”)为每个嵌套,这样我就会得到这样的东西:
key1
value1
value2
key2
value1
value2
等。
我该怎么做呢?
如何在Python中漂亮地打印深度为~4的字典?我尝试用pprint()进行漂亮的打印,但它不起作用:
import pprint
pp = pprint.PrettyPrinter(indent=4)
pp.pprint(mydict)
我只是想要一个缩进(“\t”)为每个嵌套,这样我就会得到这样的东西:
key1
value1
value2
key2
value1
value2
等。
我该怎么做呢?
当前回答
This class prints out a complex nested dictionary with sub dictionaries and sub lists.
##
## Recursive class to parse and print complex nested dictionary
##
class NestedDictionary(object):
def __init__(self,value):
self.value=value
def print(self,depth):
spacer="--------------------"
if type(self.value)==type(dict()):
for kk, vv in self.value.items():
if (type(vv)==type(dict())):
print(spacer[:depth],kk)
vvv=(NestedDictionary(vv))
depth=depth+3
vvv.print(depth)
depth=depth-3
else:
if (type(vv)==type(list())):
for i in vv:
vvv=(NestedDictionary(i))
depth=depth+3
vvv.print(depth)
depth=depth-3
else:
print(spacer[:depth],kk,vv)
##
## Instatiate and execute - this prints complex nested dictionaries
## with sub dictionaries and sub lists
## 'something' is a complex nested dictionary
MyNest=NestedDictionary(weather_com_result)
MyNest.print(0)
其他回答
你可以通过PyYAML尝试YAML。它的输出可以微调。我建议从以下开始:
print(yaml.dump(data, allow_unicode=True, default_flow_style=False))
结果非常易读;如果需要,还可以解析回Python。
编辑:
例子:
>>> import yaml
>>> data = {'a':2, 'b':{'x':3, 'y':{'t1': 4, 't2':5}}}
>>> print(yaml.dump(data, default_flow_style=False))
a: 2
b:
x: 3
y:
t1: 4
t2: 5
我的第一个想法是JSON序列化器可能很擅长嵌套字典,所以我会欺骗并使用它:
>>> import json
>>> print(json.dumps({'a':2, 'b':{'x':3, 'y':{'t1': 4, 't2':5}}},
... sort_keys=True, indent=4))
{
"a": 2,
"b": {
"x": 3,
"y": {
"t1": 4,
"t2": 5
}
}
}
你可以使用打印字典
from print_dict import pd
dict1 = {
'key': 'value'
}
pd(dict1)
输出:
{
'key': 'value'
}
此Python代码的输出:
{
'one': 'value-one',
'two': 'value-two',
'three': 'value-three',
'four': {
'1': '1',
'2': '2',
'3': [1, 2, 3, 4, 5],
'4': {
'method': <function custom_method at 0x7ff6ecd03e18>,
'tuple': (1, 2),
'unicode': '✓',
'ten': 'value-ten',
'eleven': 'value-eleven',
'3': [1, 2, 3, 4]
}
},
'object1': <__main__.Object1 object at 0x7ff6ecc588d0>,
'object2': <Object2 info>,
'class': <class '__main__.Object1'>
}
安装:
$ pip install print-dict
披露:我是print-dict的作者
最python化的方法之一是使用已经构建的pprint模块。
定义打印深度所需的参数与您预期的深度相同
import pprint
pp = pprint.PrettyPrinter(depth=4)
pp.pprint(mydict)
就是这样!
从这个链接:
def prnDict(aDict, br='\n', html=0,
keyAlign='l', sortKey=0,
keyPrefix='', keySuffix='',
valuePrefix='', valueSuffix='',
leftMargin=0, indent=1 ):
'''
return a string representive of aDict in the following format:
{
key1: value1,
key2: value2,
...
}
Spaces will be added to the keys to make them have same width.
sortKey: set to 1 if want keys sorted;
keyAlign: either 'l' or 'r', for left, right align, respectively.
keyPrefix, keySuffix, valuePrefix, valueSuffix: The prefix and
suffix to wrap the keys or values. Good for formatting them
for html document(for example, keyPrefix='<b>', keySuffix='</b>').
Note: The keys will be padded with spaces to have them
equally-wide. The pre- and suffix will be added OUTSIDE
the entire width.
html: if set to 1, all spaces will be replaced with ' ', and
the entire output will be wrapped with '<code>' and '</code>'.
br: determine the carriage return. If html, it is suggested to set
br to '<br>'. If you want the html source code eazy to read,
set br to '<br>\n'
version: 04b52
author : Runsun Pan
require: odict() # an ordered dict, if you want the keys sorted.
Dave Benjamin
http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/161403
'''
if aDict:
#------------------------------ sort key
if sortKey:
dic = aDict.copy()
keys = dic.keys()
keys.sort()
aDict = odict()
for k in keys:
aDict[k] = dic[k]
#------------------- wrap keys with ' ' (quotes) if str
tmp = ['{']
ks = [type(x)==str and "'%s'"%x or x for x in aDict.keys()]
#------------------- wrap values with ' ' (quotes) if str
vs = [type(x)==str and "'%s'"%x or x for x in aDict.values()]
maxKeyLen = max([len(str(x)) for x in ks])
for i in range(len(ks)):
#-------------------------- Adjust key width
k = {1 : str(ks[i]).ljust(maxKeyLen),
keyAlign=='r': str(ks[i]).rjust(maxKeyLen) }[1]
v = vs[i]
tmp.append(' '* indent+ '%s%s%s:%s%s%s,' %(
keyPrefix, k, keySuffix,
valuePrefix,v,valueSuffix))
tmp[-1] = tmp[-1][:-1] # remove the ',' in the last item
tmp.append('}')
if leftMargin:
tmp = [ ' '*leftMargin + x for x in tmp ]
if html:
return '<code>%s</code>' %br.join(tmp).replace(' ',' ')
else:
return br.join(tmp)
else:
return '{}'
'''
Example:
>>> a={'C': 2, 'B': 1, 'E': 4, (3, 5): 0}
>>> print prnDict(a)
{
'C' :2,
'B' :1,
'E' :4,
(3, 5):0
}
>>> print prnDict(a, sortKey=1)
{
'B' :1,
'C' :2,
'E' :4,
(3, 5):0
}
>>> print prnDict(a, keyPrefix="<b>", keySuffix="</b>")
{
<b>'C' </b>:2,
<b>'B' </b>:1,
<b>'E' </b>:4,
<b>(3, 5)</b>:0
}
>>> print prnDict(a, html=1)
<code>{
'C' :2,
'B' :1,
'E' :4,
(3, 5):0
}</code>
>>> b={'car': [6, 6, 12], 'about': [15, 9, 6], 'bookKeeper': [9, 9, 15]}
>>> print prnDict(b, sortKey=1)
{
'about' :[15, 9, 6],
'bookKeeper':[9, 9, 15],
'car' :[6, 6, 12]
}
>>> print prnDict(b, keyAlign="r")
{
'car':[6, 6, 12],
'about':[15, 9, 6],
'bookKeeper':[9, 9, 15]
}
'''