Python Pandas Panel.size

在Pandas中，面板是一个非常重要的三维数据的容器。3个轴的名称是为了给描述涉及面板数据的操作，特别是面板数据的计量经济学分析，提供一些语义上的意义。

在Pandas的Panel.size中，如果是Series，则给出行数。否则，如果是DataFrame，则返回行数乘以列数。

语法: Panel.size

参数: None

返回：返回代表此对象中元素数量的int值。

代码 #1:

# importing pandas module  
import pandas as pd  
import numpy as np 
    
df1 = pd.DataFrame({'a': ['Geeks', 'For', 'geeks', 'for', 'real'],  
                    'b': [11, 1.025, 333, 114.48, 1333]}) 
                      
print("df1 is - \n\n", df1)
  
# Create a 5 * 5 dataframe 
df2 = pd.DataFrame(np.random.rand(10, 2), columns =['a', 'b']) 
print("df2 is - \n\n", df2)

Python Pandas Panel.size

现在，让我们使用df1和df2的dict创建面板，并获得该面板的尺寸。

data = {'item1':df1, 'item2':df2} 
    
# creating Panel  
panel = pd.Panel.from_dict(data, orient ='minor') 
print("panel['b'] is - \n\n", panel['b'], '\n') 
  
  
print("\nSize of panel['b'] is - ", panel['b'].size)

输出:
Python Pandas Panel.size

代码 #2:

# importing pandas module  
import pandas as pd  
import numpy as np 
    
df1 = pd.DataFrame({'a': ['Geeks', 'For', 'geeks', 'for', 'real'],  
                    'b': [11, 1.025, 333, 114.48, 1333]}) 
                        
data = {'item1':df1, 'item2':df1} 
    
# creating Panel  
panel = pd.Panel.from_dict(data, orient ='minor') 
    
print("panel['b'] is - \n\n", panel['b'], '\n') 
    
print("\nSize of panel['b'] is - ", panel['b'].size)

输出:
Python Pandas Panel.size

代码 #3:

# importing pandas module 
import pandas as pd 
import numpy as np 
  
df1 = pd.DataFrame({'a': ['Geeks', 'For', 'geeks', 'real'], 
                    'b': [-11, +1.025, -114.48, 1333]}) 
  
df2 = pd.DataFrame({'a': ['I', 'am', 'dataframe', 'two'], 
                    'b': [100, 100, 100, 100]}) 
                      
data = {'item1':df1, 'item2':df2}
  
# creating Panel 
panel = pd.Panel.from_dict(data, orient ='minor') 
print("panel['b'] is - \n\n", panel['b']) 
  
print("\nSize of panel['b'] is - ",  panel['b'].size)