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بایدن از رقابتهای انتخاباتی کنارهگیری کرد. رئیسجمهور آمریکا و نامزد حزب دموکرات اعلام کرد از رقابتهای انتخاباتی کنارهگیری میکند. از پشت صحنه دموکراتها در نمایش ضعیف بایدن چه خبر ...
Mar 21, 2024 · Pandas dataframe.isna() function is used to detect missing values. It return a boolean same-sized object indicating if the values are NA. NA values, such as None or numpy.NaN, gets mapped to True values. Everything else gets mapped to False values.
The Excel ISNA function returns TRUE when a cell contains the #N/A error and FALSE for any other value, or any other error type. You can use the ISNA function with the IF function test for #N/A and display a friendly message if the error occurs.
pandas.DataFrame.isna# DataFrame. isna [source] # Detect missing values. Return a boolean same-sized object indicating if the values are NA. NA values, such as None or numpy.NaN, gets mapped to True values. Everything else gets mapped to False values.
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pandas. isna (obj) [source] # Detect missing values for an array-like object. This function takes a scalar or array-like object and indicates whether values are missing ( NaN in numeric arrays, None or NaN in object arrays, NaT in datetimelike).
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