
df=pd.DataFrame({"A":["a001","a001","b001","b001"],
"B":["b1","b2","b2",None],
"C":[1,2,3,4],
"D":[4,5,6,7],
"E":[1,2,3,None]})
df

1 pandas中的数据类型查看

2 pandas中的数据转换方式
2.1 在导入数据的同时,使用参数进行数据转换

2.2 使用convert_dtypes()函数进行转换


2.3 使用astypes函数进行转换


df=pd.DataFrame({"A":["a001","a001","b001","b001"],
"B":["b1","b2","b2",None],
"C":[1,2,3,4],
"D":[4,5,6,7],
"E":[1,2,3,None]})
df
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