Question

我有一个字典项列表的“列表”（强调引号），我试图得到它的长度。该项目的当前格式（类似JSON）如下所示：

x = {"fullgame":"+2","firsthalf":"Ev","secondhalf":"-1"}
{"fullgame":"-1.5","firsthalf":"Ev","secondhalf":""}
{"fullgame":"-2","firsthalf":"-0.5","secondhalf":""}
{"fullgame":"-1.5","firsthalf":"Ev","secondhalf":""}
{"fullgame":"-1.5","firsthalf":"-0.5","secondhalf":""}
{"fullgame":"-1.5","firsthalf":"Ev","secondhalf":""}

显然，如果格式正确，此列表的长度将为6。我一直试图在结束括号中分割项目或使用追加，但我总是得到每个项目长度的打印输出（或更糟）。基本上，我想我真的只是想把上面的对象变成下面打印的对象，因为我知道它得到了我正在寻找的输出......

x = [{"fullgame":"+2","firsthalf":"Ev","secondhalf":"-1"},
{"fullgame":"-1.5","firsthalf":"Ev","secondhalf":""},
{"fullgame":"-2","firsthalf":"-0.5","secondhalf":""},
{"fullgame":"-1.5","firsthalf":"Ev","secondhalf":""},
{"fullgame":"-1.5","firsthalf":"-0.5","secondhalf":""},
{"fullgame":"-1.5","firsthalf":"Ev","secondhalf":""},]

原谅新手问题。我一直在寻找这个问题的答案，但是我觉得这很简单。

编辑：我只是想让这个列表的长度远远超过6个条目。之后，我将遍历该列表，跳过每7个条目并提取特定值并将其推送到csv。虽然

，但我对该项目的这一部分没有任何问题

Answer 1

如果你的x是这样的，请尝试：

x = '{"fullgame":"+2","firsthalf":"Ev","secondhalf":"-1"}\
     {"fullgame":"-1.5","firsthalf":"Ev","secondhalf":""}\
     {"fullgame":"-2","firsthalf":"-0.5","secondhalf":""}\
     {"fullgame":"-1.5","firsthalf":"Ev","secondhalf":""}\
     {"fullgame":"-1.5","firsthalf":"-0.5","secondhalf":""}\
     {"fullgame":"-1.5","firsthalf":"Ev","secondhalf":""}'

import ast
import re

text = re.sub(r'(})', r'\1,', x)
result = ast.literal_eval(text)
print(list(result))

它会像：

[{'secondhalf': '-1', 'fullgame': '+2', 'firsthalf': 'Ev'}, 
 {'secondhalf': '', 'fullgame': '-1.5', 'firsthalf': 'Ev'}, 
 {'secondhalf': '', 'fullgame': '-2', 'firsthalf': '-0.5'}, 
 {'secondhalf': '', 'fullgame': '-1.5', 'firsthalf': 'Ev'}, 
 {'secondhalf': '', 'fullgame': '-1.5', 'firsthalf': '-0.5'},    
 {'secondhalf': '', 'fullgame': '-1.5', 'firsthalf': 'Ev'}]

然后您可以轻松找到列表的长度，例如print(len(list(result)))

Answer 2

假设你有'x'作为字符串，你可以这样做：

x = x.replace("}{","}!!@${")
l = x.split("!!@$") # Add some dummy delimiter
print(len(l))
print(l[0])

6

{ “fullgame”： “+ 2”， “firsthalf”： “EV”， “secondhalf”： “ - 1”}

Answer 3

如果你只想要字符串中每个字典的计数......

x = """{"fullgame":"+2","firsthalf":"Ev","secondhalf":"-1"}
{"fullgame":"-1.5","firsthalf":"Ev","secondhalf":""}
{"fullgame":"-2","firsthalf":"-0.5","secondhalf":""}
{"fullgame":"-1.5","firsthalf":"Ev","secondhalf":""}
{"fullgame":"-1.5","firsthalf":"-0.5","secondhalf":""}
{"fullgame":"-1.5","firsthalf":"Ev","secondhalf":""}"""

print(x.count("}\n{")+1)

<强>输出：

获取列表的长度，其中包含多个列表（包含字典项）

3 个答案: