numpy pandas series 数据维度的变换

• list -> series -> df

import numpy as np
import pandas as pd

lst = ['a','b','c']
se = pd.Series(lst)
pd.DataFrame(se, columns = ['i'])

• numpy _1维 -> numpy _2维

import numpy as np
import pandas as pd

lst = ['a','b','c']
b = np.array(lst)
b

g = b.reshape(-1, 1)
g

• list -> numpy_1维 -> df

import numpy as np
import pandas as pd

lst = ['a','b','c']
b = np.array(lst)
c = pd.DataFrame(b, columns = ['i'])
c

• list -> numpy_2维 -> df

• list_1维 -> df

• list_2维 -> df