pandas包 问题汇总

import pandas as pd
#error_bad_lines=False表示跳过错误数据行
data = pd.read_csv('file1.csv', error_bad_lines=False)

for index, row in df.iterrows():
    print row["c1"], row["c2"]

import pandas as pd
from pandas import DataFrame

#任意的多组列表
a = [1,2,3]
b = [4,5,6]

#字典中的key值即为csv中的列名
data = {'a_name':a,'b_name':b}

#设置DataFrame列的排列顺序
dataFrame = DataFrame(data, columns=['a_name', 'b_name'])
"""
dataFrame：
  a_name  b_name
0     1     4
1     2     5
2     3     6
"""
for index, row in dataFrame.iterrows():
    if row['b_name']==4:
           row['b_name']=10
"""
dataFrame：
  a_name  b_name
0     1     10
1     2     5
2     3     6
"""
for each in dataFrame['b_name']:
    each=20
"""
dataFrame：
  a_name  b_name
0     1     10
1     2     5
2     3     6
"""