5.7.10. API-Series¶

Constructor¶

结构:

Series(data=None, index=None, dtype=None, name=None, copy=False, fastpath=False)

说明:

Read a comma-separated values (csv) file into DataFrame.

Series的创建:

序列的创建主要有三种方式:
1. 通过一维数组创建序列
  In [40]: arr1 = np.arange(10)
      ...: print(arr1)
      ...: s1 = pd.Series(arr1)
      ...: print(s1)
  [0 1 2 3 4 5 6 7 8 9]
  0    0
  1    1
  2    2
  3    3
  4    4
  5    5
  6    6
  7    7
  8    8
  9    9
  dtype: int64
2. 通过字典的方式创建序列
   In [41]: dic1 = {'a':10,'b':20,'c':30,'d':40,'e':50}
      ...: print(dic1)
      ...: print(type(dic1))
  {'a': 10, 'b': 20, 'c': 30, 'd': 40, 'e': 50}
  <class 'dict'>
3. 通过DataFrame中的某一行或某一列创建序列

Attributes¶

Series.index:

The index (axis labels) of the Series.
返回值类型:
  Series.index