Mol*_*hao 5 python transpose reshape dataframe pandas
对于一个研究项目,我需要将每个人的信息从网站处理成一个excel文件.我已经将我需要的所有东西从网站复制并粘贴到excel文件中的一个列上,然后我使用PANDAS加载了该文件.但是,我需要水平呈现每个人的信息,而不是像现在一样垂直呈现.例如,这就是我现在所拥有的.我只有一列无组织数据.
df= pd.read_csv("ior work.csv", encoding = "ISO-8859-1")
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数据:
0 Andrew
1 School of Music
2 Music: Sound of the wind
3 Dr. Seuss
4 Dr.Sass
5 Michelle
6 School of Theatrics
7 Music: Voice
8 Dr. A
9 Dr. B
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我希望每5行转置一次,将数据组织成这种组织格式; 下面的标签是列的标签.
Name School Music Mentor1 Mentor2
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最有效的方法是什么?
如果没有数据丢失,可以使用numpy.reshape:
print (np.reshape(df.values,(2,5)))
[['Andrew' 'School of Music' 'Music: Sound of the wind' 'Dr. Seuss'
'Dr.Sass']
['Michelle' 'School of Theatrics' 'Music: Voice' 'Dr. A' 'Dr. B']]
print (pd.DataFrame(np.reshape(df.values,(2,5)),
columns=['Name','School','Music','Mentor1','Mentor2']))
Name School Music Mentor1 Mentor2
0 Andrew School of Music Music: Sound of the wind Dr. Seuss Dr.Sass
1 Michelle School of Theatrics Music: Voice Dr. A Dr. B
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通过除以列数生成length新array的更通用的解决方案shape:
print (pd.DataFrame(np.reshape(df.values,(df.shape[0] / 5,5)),
columns=['Name','School','Music','Mentor1','Mentor2']))
Name School Music Mentor1 Mentor2
0 Andrew School of Music Music: Sound of the wind Dr. Seuss Dr.Sass
1 Michelle School of Theatrics Music: Voice Dr. A Dr. B
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谢谢piRSquared提供了另一个解决方案:
print (pd.DataFrame(df.values.reshape(-1, 5),
columns=['Name','School','Music','Mentor1','Mentor2']))
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