PANDAS: 从 csv 文件导入数据时列名错误

Question

我通过这段代码得到了错误的列名：为什么会这样？还有其他方法吗？

names = {'SYMBOL','CLMP'}
data2 = pd.read_csv(filePath +"\"+ fileNameCM2+'.csv',skiprows = 1, index_col=False, names = names,header=None)
df3 = pd.DataFrame(data2)

print(df3.head())

OUTPUT:
          CLMP    SYMBOL
0         ACC    853921
1    ADANIENT   2758466
2  ADANIPORTS   7591819
3  ADANIPOWER  11774513
4  AJANTPHARM    257752

EXPECTED:
      SYMBOL      CLMP
0         ACC    853921
1    ADANIENT   2758466
2  ADANIPORTS   7591819
3  ADANIPOWER  11774513
4  AJANTPHARM    257752

Answer 1

这是因为 set 将对名称进行排序，而不是使用 list 列名称：

names = ['SYMBOL','CLMP']
df3 = pd.read_csv(filePath +"\"+ fileNameCM2+'.csv',
                  skiprows = 1, 
                  index_col=False, 
                  names = names)

print (df)
       SYMBOL      CLMP
0         ACC    853921
1    ADANIENT   2758466
2  ADANIPORTS   7591819
3  ADANIPOWER  11774513
4  AJANTPHARM    257752

PANDAS: 从 csv 文件导入数据时列名错误

PANDAS: Wrong column names while importing data from csv file

python

pandas

csv

import-from-csv