将pandas系列转换为字符串数组

Question

我有一个pandas数据帧：

figwheel

我想将其转换为字符串：ind 0 ['C'] 1 ['C'] 2 ['C'] 3 ['C'] 4 ['E'] 5 ['E']

Answer 1

您可以使用str

df['ind'].str[0].sum()
Out[197]: 'CCCCEE'

Answer 2

使用itertools.chain：

from itertools import chain

df = pd.DataFrame({'ind': [['C'], ['C'], ['C'], ['C'], ['E'], ['E']]})

res = ''.join(chain.from_iterable(df['ind']))

print(res)

CCCCEE

Answer 3

你可以这样做：

chain=""
for index, row in df.iterrows():
    chain=chain+row['column']
return chain

如果您在迭代数据框时遇到问题，可以查看此How to iterate over rows in a DataFrame in Pandas?