我尝试使用Pandas解析Excel文件。
import pandas as pd
import xlrd
xl_file = pd.ExcelFile("file.xlsx")
df = xl_file.parse("Sheet1")
现在,如果我从工作表中得到一个值(name
):
if len(df.loc[df["Col A"].str.contains("John"), "Col B"]) > 0:
name = df.loc[df["Col A"].str.contains("John"), "Col B"]
然后print name
,结果是:
1 John Doe Name: Col B, dtype: object
或print name.values
:
[u'John Doe']
但如果我尝试使用print name[0]
检索实际字符串,我会KeyError
:
File "pandas/core/series.py", line 583, in __getitem__ result = self.index.get_value(self, key) File "pandas/indexes/base.py", line 1980, in get_value tz=getattr(series.dtype, 'tz', None)) File "pandas/index.pyx", line 103, in pandas.index.IndexEngine.get_value (pandas/index.c:3332) File "pandas/index.pyx", line 111, in pandas.index.IndexEngine.get_value (pandas/index.c:3035) File "pandas/index.pyx", line 159, in pandas.index.IndexEngine.get_loc (pandas/index.c:4018) File "pandas/hashtable.pyx", line 303, in pandas.hashtable.Int64HashTable.get_item (pandas/hashtable.c:6610) File "pandas/hashtable.pyx", line 309, in pandas.hashtable.Int64HashTable.get_item (pandas/hashtable.c:6554) KeyError: 0
可能是什么问题?
答案 0 :(得分:3)
name
是一个系列,0
不在系列的索引中(检查name.index
)。这解释了错误消息。
如果要选择系列中的第一个元素,请执行以下操作:
name.iloc[0]