使用具有字典列表的数据框的列为该数据框创建其他列 [英] Use the column of a dataframe that has a list of dictionaries to create other columns for the dataframe
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问题描述
我的数据框中有一个类型为object的列，其值如下:
I have a column in my dataframe of type object that has values like:
for i in df3['placeholders'][:10]:
Output:
[{'type': 'experience', 'label': '0-1 Yrs'}, {'type': 'salary', 'label': '1,00,000 - 1,25,000 PA.'}, {'type': 'location', 'label': 'Chennai'}]
[{'type': 'date', 'label': '08 October - 13 October'}, {'type': 'salary', 'label': 'Not disclosed'}, {'type': 'location', 'label': 'Chennai'}]
[{'type': 'education', 'label': 'B.Com'}, {'type': 'salary', 'label': 'Not disclosed'}, {'type': 'location', 'label': 'Mumbai Suburbs, Navi Mumbai, Mumbai'}]
[{'type': 'experience', 'label': '0-2 Yrs'}, {'type': 'salary', 'label': '50,000 - 2,00,000 PA.'}, {'type': 'location', 'label': 'Chennai'}]
[{'type': 'experience', 'label': '0-1 Yrs'}, {'type': 'salary', 'label': '2,00,000 - 2,25,000 PA.'}, {'type': 'location', 'label': 'Bengaluru(JP Nagar)'}]
[{'type': 'experience', 'label': '0-3 Yrs'}, {'type': 'salary', 'label': '80,000 - 2,00,000 PA.'}, {'type': 'location', 'label': 'Hyderabad'}]
[{'type': 'experience', 'label': '0-5 Yrs'}, {'type': 'salary', 'label': 'Not disclosed'}, {'type': 'location', 'label': 'Hyderabad'}]
[{'type': 'experience', 'label': '0-1 Yrs'}, {'type': 'salary', 'label': '1,25,000 - 2,00,000 PA.'}, {'type': 'location', 'label': 'Mumbai'}]
[{'type': 'date', 'label': '08 October - 17 October'}, {'type': 'salary', 'label': 'Not disclosed'}, {'type': 'location', 'label': 'Pune(Bavdhan)'}]
[{'type': 'experience', 'label': '0-2 Yrs'}, {'type': 'salary', 'label': 'Not disclosed'}, {'type': 'location', 'label': 'Jaipur'}]
[{'type': 'experience', 'label': '0-0 Yrs'}, {'type': 'salary', 'label': '1,00,000 - 1,50,000 PA.'}, {'type': 'location', 'label': 'Delhi NCR(Sector-81 Noida)'}]
我想通过从此列中提取特征来向现有数据框中添加更多列，
I want to add more columns to my existing dataframe by extracting features from this column such that
类型"的值= 列名
标签"的值= 列下的值
最终预期输出:
df.head(3)
Output:
..... experience, salary, location, date, education
..... 0-1 Yrs, 1,00,000 - 1,25,000 PA., Chennai, nan, nan
..... nan, 1,00,000 - 1,25,000 PA., Chennai, 08 October - 13 October, nan
..... nan, Not disclosed, Mumbai Suburbs, Navi Mumbai, Mumbai, nan, B.Com
第一个答案有效.
后来，我尝试对具有相同问题的新数据集的第一次响应中建议的相同代码.我收到以下错误:
The first answer worked.
Later, I tried the same code suggested in the first response for a new dataset with same issue. I got the following error:
<ipython-input-23-ad8e644044af> in <listcomp>(.0)
----> 1 new_columns = set([d['Name'] for l in dfr.RatingDistribution.values for d in l ])
2 # Make a dict of dicts
3 col_val_dict = {}
4 for col_name in new_columns:
5 col_val_dict[col_name] = {}
TypeError: 'float' object is not iterable
我的输入列:
RatingDistribution
[{'Name': 'Work-Life Balance', 'count': 5}, {'Name': 'Skill Development', 'count': 5}, {'Name': 'Salary & Benefits', 'count': 5}, {'Name': 'Job Security', 'count': 5}, {'Name': 'Company Culture', 'count': 5}, {'Name': 'Career Growth', 'count': 5}, {'Name': 'Work Satisfaction', 'count': 5}]
[{'Name': 'Work-Life Balance', 'count': 4}, {'Name': 'Skill Development', 'count': 5}, {'Name': 'Salary & Benefits', 'count': 4}, {'Name': 'Job Security', 'count': 4}, {'Name': 'Company Culture', 'count': 3}, {'Name': 'Career Growth', 'count': 3}, {'Name': 'Work Satisfaction', 'count': 5}]
[{'Name': 'Work-Life Balance', 'count': 3}, {'Name': 'Skill Development', 'count': 4}, {'Name': 'Salary & Benefits', 'count': 5}, {'Name': 'Job Security', 'count': 4}, {'Name': 'Company Culture', 'count': 5}, {'Name': 'Career Growth', 'count': 4}, {'Name': 'Work Satisfaction', 'count': 4}]
[{'Name': 'Work-Life Balance', 'count': 5}, {'Name': 'Skill Development', 'count': 5}, {'Name': 'Salary & Benefits', 'count': 5}, {'Name': 'Job Security', 'count': 5}, {'Name': 'Company Culture', 'count': 5}, {'Name': 'Career Growth', 'count': 5}, {'Name': 'Work Satisfaction', 'count': 5}]
[{'Name': 'Work-Life Balance', 'count': 3}, {'Name': 'Skill Development', 'count': 5}, {'Name': 'Salary & Benefits', 'count': 3}, {'Name': 'Job Security', 'count': 3}, {'Name': 'Company Culture', 'count': 3}, {'Name': 'Career Growth', 'count': 3}, {'Name': 'Work Satisfaction', 'count': 4}]
[{'Name': 'Work-Life Balance', 'count': 3}, {'Name': 'Skill Development', 'count': 5}, {'Name': 'Salary & Benefits', 'count': 5}, {'Name': 'Job Security', 'count': 1}, {'Name': 'Company Culture', 'count': 3}, {'Name': 'Career Growth', 'count': 1}, {'Name': 'Work Satisfaction', 'count': 1}]
我的代码:
new_columns = set([d['Name'] for l in dfr.RatingDistribution.values for d in l ])
# Make a dict of dicts
col_val_dict = {}
for col_name in new_columns:
col_val_dict[col_name] = {}
# For each column name look to see if a row has that as a type
# If so, get the label for that dict
# otherwise fill it with NaN
for i,l in enumerate(dfr.placeholders.values):
the_label = [d['count'] for d in l if d['Name'] == col_name]
if the_label:
col_val_dict[col_name][i] = the_label[0]
else:
col_val_dict[col_name][i] = np.NaN
# Merge this new dfa with the old one
merged_dfa = pd.concat([dfr,pd.DataFrame(col_val_dict)],axis='columns')
dfr.shape
第一行出现错误.我无法弄清楚为什么它会引发浮动错误.
I'm getting error in the very first line. I'm not able to figure out why it is throwing me the float error.
请帮助
推荐答案
# Get the unique types (column names)
new_columns = set([d['type'] for l in df3.placeholders.values for d in l ])
# Make a dict of dicts
col_val_dict = {}
for col_name in new_columns:
col_val_dict[col_name] = {}
# For each column name look to see if a row has that as a type
# If so, get the label for that dict
# otherwise fill it with NaN
for i,l in enumerate(df3.placeholders.values):
the_label = [d['label'] for d in l if d['type'] == col_name]
if the_label:
col_val_dict[col_name][i] = the_label[0]
else:
col_val_dict[col_name][i] = np.NaN
# Merge this new df with the old one
merged_df = pd.concat([df3,pd.DataFrame(col_val_dict)],axis='columns')
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