TypeError: ‘NoneType’ object is not iterable
返回值为None,但接收有好几个值,例如:
def foo():
return None
a, b = foo()
pandas.core.indexing.IndexingError: Too many indexers
df.loc[:,'风力','天气']
应改为df.loc[:,['风力','天气']]
IndexError: single positional indexer is out-of-bounds
df = pd.DataFrame(np.arange(12).reshape(3,4)%4)
print(df.iloc[4])
IndexError: iloc cannot enlarge its target object
在想要把值赋给新的行时会出现这个问题,例如:
for i in sheet.nrows:
df.iloc[i] = sheet.row_values(i)
应该为
for i in sheet.nrows:
df.loc[i] = sheet.row_values(i)
KeyError: “[‘lalala‘] not found in axis“
在删除行或列时经常一不注意就把名字写错,会报这个错