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Home/ Questions/How to avoid the error "typeerror: cannot convert the series to"?
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Gabin Cohen
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Gabin Cohen
Asked: May 18, 20222022-05-18T10:21:50+00:00 2022-05-18T10:21:50+00:00In: python

How to avoid the error “typeerror: cannot convert the series to”?

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I am new to python and searching the “typeerror: cannot convert the series to ” to understand it better. It seems it doesn’t work as expected when I used some suggestions before. Here is the command line I use:

date A
 2001-01-02 1.0022
 2001-01-03 1.1033
 2001-01-04 1.1496
 2001-01-05 1.1033
 
 2015-03-30 126.3700
 2015-03-31 124.4300
 2015-04-01 124.2500
 2015-04-02 124.8900
df["B"] = math.log(df["A"] / df["A"].shift(1))
df["B"] .astype(float)

The error I’m getting is below:

TypeError: cannot convert the series to <class 'float'>

Please give me the solution to this issue.

cannot convert the series to
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    hdtutoria Expert
    2022-06-08T03:21:05+00:00Added an answer on June 8, 2022 at 3:21 am

    The cause: I think the cause of this error is thatMath.log is looking for a single number, not an array of numbers.

    The solution: Instead, you can use numpy.log.

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  2. Mohamed Boyer
    2022-05-25T20:13:28+00:00Added an answer on May 25, 2022 at 8:13 pm

    To apply your functions to either the series or the data frame of pandas, you can use the lambda operator. You can convert every element in a column to an floating point number by using the lambda operator.

    df['A'].apply(lambda x: float(x))

    Here, the lambda operator will take values from that column (as “x”) and return them as a floating value.

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