isinstance()学习

aa ={}
if isinstance(aa,dict):print("是")aa =2
if isinstance(aa,dict):print("是")aa =2
if isinstance(aa,int):print("是")aa = []
if isinstance(aa,list):print("list")aa =[1,2,3]
if isinstance(aa,list):print("list")import numpy as np 
aa = np.array([11,22,33])
if isinstance(aa,np.ndarray):print("np.array")import pandas as pd  
import pandas as pd# Create a pandas DataFrame
df = pd.DataFrame({'A': [1, 2, 3], 'B': [4, 5, 6]})# Check if the variable 'df' is a pandas DataFrame
if isinstance(df, pd.DataFrame):print("df is a pandas DataFrame")
else:print("df is not a pandas DataFrame")import scanpy as sc 
import anndata
import numpy as np# Create an AnnData object
adata = sc.AnnData(X=np.random.rand(3, 3))# Check if the variable 'adata' is an AnnData object
if isinstance(adata, sc.AnnData):print("adata is an AnnData object")
else:print("adata is not an AnnData object")if isinstance(df, sc.AnnData):print("df is an AnnData object")
else:print("df is not an AnnData object")

结果如下