用嵌套字典格式化字符串 [英] String formating with nested dictionary
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问题描述
我试图通过字符串格式来从嵌套字典中编写多个键和相关的值。我已经尝试了各种方法，但因为它嵌套，我似乎没有太多的运气。这可能吗？
嵌套字典
defaultdict（None，{'Devicename'：{'OS'：'version'，'Name'：'name'}，'Devicename'：{'OS'：'version'，'Name'：'name'} }）
格式化数据
HEADER ='''
< html>
< head>
< h2>总结< / h2>
< tr>
< td>< b>设备：< / b> {0}< / TD>
< / tr>
< table style =width：80％>
< tr>
< td>< b>名称：< / b> {1}< / TD>
< td>< b>操作系统：< / b> {2}< / TD>
< / tr>
< / table>
< / head>
< body>
'''
写入文件
$ $ p $
用open（Summary.html，w +）作为outfile：
outfile.write（HEADER.format（device_dic [ 0]，device_dic ['Name']，device_dic ['OS']））
＃每个测试字典中可能包含多个项目。 Devicename变化了，所以不能被字符串例子['OS']调用。
解决方案
循环访问其内容。您可以使用 items（）字典方法遍历它的键和值：
>>> a = collections.defaultdict（None，{'Devicename1'：{'OS'：'version'，'Name'：'name'}，'Devicename2'：{'OS'：'version'，'Name'：'name '}}）
>>> HEADER ='''
...< html>
...< head>
...< h2>汇总< / h2>
...< tr>
...< td>< b>设备：< / b> {0}< / TD>
...< / tr>
...< table style =width：80％>
...< tr>
...< td>< b>名称：< / b> {1}< / TD>
...< td>< b>操作系统：< / b> {2}< / TD>
...< / tr>
...< / table>
...< / head>
...< body>
...'''
>>>对于key，d在a.items（）中：
... print（HEADER.format（key，d ['Name']，d ['OS']））
...
< html>
< head>
< h2>总结< / h2>
< tr>
< td>< b>设备：< / b> Devicename2< / TD>
< / tr>
< table style =width：80％>
< tr>
< td>< b>名称：< / b>命名< / TD>
< td>< b>操作系统：< / b>版本< / TD>
< / tr>
< / table>
< / head>
< body>
< html>
< head>
< h2>总结< / h2>
< tr>
< td>< b>设备：< / b> Devicename1< / TD>
< / tr>
< table style =width：80％>
< tr>
< td>< b>名称：< / b>命名< / TD>
< td>< b>操作系统：< / b>版本< / TD>
< / tr>
< / table>
< / head>
< body>
I'm trying to write multiple keys and associated values from a nested dictionary via string formatting. I have tried various approaches but as it is nested I don't seem to be having much luck. Is this possible?
Nested Dictionary
defaultdict(None, {'Devicename': {'OS': 'version', 'Name': 'name'}, 'Devicename': {'OS': 'version', 'Name': 'name'}})
Formatting Data
HEADER = '''
<html>
<head>
<h2>Summary</h2>
<tr>
<td><b>Device:</b> {0}</td>
</tr>
<table style="width:80%">
<tr>
<td><b>Name:</b> {1}</td>
<td><b>OS:</b> {2}</td>
</tr>
</table>
</head>
<body>
'''
Writing To File
with open("Summary.html", "w+") as outfile:
outfile.write(HEADER.format(device_dic[0], device_dic['Name'], device_dic['OS']))
#Potentially multiple items of each as shown in test dictionary. The `Devicename` varies so cant be called by string example ['OS'].
解决方案
Loop through the dictionary to access its contents. You can use the items() dictionary method to loop through its keys and values together:
>>> a = collections.defaultdict(None, {'Devicename1': {'OS': 'version', 'Name': 'name'}, 'Devicename2': {'OS': 'version', 'Name': 'name'}})
>>> HEADER = '''
... <html>
... <head>
... <h2>Summary</h2>
... <tr>
... <td><b>Device:</b> {0}</td>
... </tr>
... <table style="width:80%">
... <tr>
... <td><b>Name:</b> {1}</td>
... <td><b>OS:</b> {2}</td>
... </tr>
... </table>
... </head>
... <body>
... '''
>>> for key,d in a.items():
... print(HEADER.format(key, d['Name'], d['OS']))
...
<html>
<head>
<h2>Summary</h2>
<tr>
<td><b>Device:</b> Devicename2</td>
</tr>
<table style="width:80%">
<tr>
<td><b>Name:</b> name</td>
<td><b>OS:</b> version</td>
</tr>
</table>
</head>
<body>
<html>
<head>
<h2>Summary</h2>
<tr>
<td><b>Device:</b> Devicename1</td>
</tr>
<table style="width:80%">
<tr>
<td><b>Name:</b> name</td>
<td><b>OS:</b> version</td>
</tr>
</table>
</head>
<body>
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