如何在 csv 文件中将一列元素保存为一行？

Question

如何将一列元素作为行/列表保存在 CSV 文件中？

下面是我的代码的相关部分......

import pandas as pd

df=pd.DataFrame(tbl,columns=['type','skill','job1','job2','m1','m2'])
df2=df['skill']

print(type(df2))
print(df2)

...及其相应的结果...

<class 'pandas.core.series.Series'>

1                statistics
26         highly motivated
32                     team
...
93                knowledge
94                  curious
95                      can
96                    lives
98             early talent
99           talent program
100         computer skills
101     process development
102             soft skills
103           early program
Name:  skill, dtype: object

我想要的 output 将是一个 CSV 文件，其中所有单词都列在一行中，并用逗号分隔，即

statistics, highly motivated, team, ..., knowledge, curious, can, lives, early talent, ...

Answer 1

pandas 方法是转置单列 dataframe：

df2=df[['skill']]   # the double brackes ensure that df2 is a dataframe
df2.transpose.to_csv('out.csv', header=None)

这将生成（使用您的示例数据）：

statistics,highly motivated,team,knowledge,curious,can,lives,early talent,talent program,computer skills,process development,soft skills,early program

好消息是它将正确处理包含逗号或换行符的字段......

Answer 2

您可以这样做...对于任何列以根据需要获取数据；

col_to_str = ", ".join(list(df['Column_Name']))
# Export as CSV
import pandas as pd
df1 = pd.DataFrame({"Column_Name":[col_to_str]})
df1.to_csv("export.csv",index=False)

希望这可以帮助...