从列表中创建熊猫系列
原文:https://www.geesforgeks.org/creating-a-pandas-series-from-list/
A Series 是一个一维标注数组，能够保存任意数据类型(整数、字符串、浮点数、Python 对象等)。).必须记住，与 Python 列表不同，系列总是包含相同类型的数据。
让我们看看如何从列表中创建熊猫系列。
方法#1 : 使用Series()方法，没有任何参数。
# import pandas as pd
import pandas as pd
# create Pandas Series with default index values
# default index ranges is from 0 to len(list) - 1
x = pd.Series(['Geeks', 'for', 'Geeks'])
# print the Series
print(x)
输出:
方法#2 : 使用Series()方法配合'index'参数。
# import pandas lib. as pd
import pandas as pd
# create Pandas Series with define indexes
x = pd.Series([10, 20, 30, 40, 50], index =['a', 'b', 'c', 'd', 'e'])
# print the Series
print(x)
输出:
另一个例子:
# import pandas lib. as pd
import pandas as pd
ind = [10, 20, 30, 40, 50, 60, 70]
lst = ['Geeks', 'for', 'Geeks', 'is',
'portal', 'for', 'geeks']
# create Pandas Series with define indexes
x = pd.Series(lst, index = ind)
# print the Series
print(x)
输出:
方法#3: 使用多列表Series()方法
# importing pandas
import pandas as pd
# multi-list
list = [ ['Geeks'], ['For'], ['Geeks'], ['is'],
['a'], ['portal'], ['for'], ['geeks'] ]
# create Pandas Series
df = pd.Series((i[0] for i in list))
print(df)
输出:
