Python中识别DataFrame中的nan详解编程语言

# 识别python中DataFrame中的nan
for i in pfsj.index:
if type(pfsj.loc[i][ WZML ]) == float:
print( float value is ${} .format(pfsj.loc[i][ WZML ]))
elif type(pfsj.loc[i][ WZML ]) == str:
print( str value is ${} .format(pfsj.loc[i][ WZML ]))

结果：

# 根据结果可知在DataFrame中，nan的类型为float
# 使用math中的isnan函数识别数据是否是nan类型的
for i in pfsj.index:
if type(pfsj.loc[i][ WZML ]) == float:
if isnan(pfsj.loc[i][ WZML ]):
print( float type is ${} .format(type(pfsj.loc[i][ WZML ])))

结果：

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