DataFrame.append(other, ignore_index=False, verify_integrity=False) http://pandas.pydata.org/pandas-docs/stable/generated/pandas.DataFrame.append.html
DataFrame连接字典
In [
1]: import pandas as pd
...: df=pd.DataFrame({
...:
"name":[],
...:
"age":[]
...: })
...: student={
...:
"name":
"wang",
...:
"age":
1
...: }
...: df.append(pd.DataFrame(student))
ValueError: If using all scalar values, you must pass an index
提示这样的错误是因为字典在转为DataFrame的时候没有给出索引,应该在转换的时候给出索引
给字典转换的数据框添加索引
In [
1]: import pandas as pd
...: df=pd.DataFrame({
...:
"name":[],
...:
"age":[]
...: })
...: student={
...:
"name":
"wang",
...:
"age":
1
...: }
...: df.append(pd.DataFrame(student,index=[
1]))
Out[
1]:
age name
1 1.0 wang
这届添加字典,忽略掉索引
In [
1]: import pandas as pd
...: df=pd.DataFrame({
...:
"name":[],
...:
"age":[]
...: })
...: student={
...:
"name":
"wang",
...:
"age":
1
...: }
...: df.append(student,ignore_index=True)
Out[
1]:
age name
0 1.0 wang
