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### Polars version checks
- [X] I have checked that this issue has not already been reported.
- [X] I have confirmed this bug exists on the [latest version](https://pypi.org/project/polars/) of Pola…
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### Pandas version checks
- [X] I have checked that this issue has not already been reported.
- [X] I have confirmed this bug exists on the [latest version](https://pandas.pydata.org/docs/whatsnew/i…
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#### Problem description
`pandas.DataFrame.apply()`seems to be converting series from int64 to object in some circumstances, and I'm not sure why. An example of the strange behavior I'm seeing is s…
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#### Code Sample, a copy-pastable example if possible
On `master` trying to use `pd.NA` as an input to `searchsorted` fails, and trying to use the `searchsorted` of an array containing `pd.NA` also f…
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#### Problem description
I am providing custom formatters for specific columns as dict.
If frame is large enough and some columns are truncated - then wrong formatters are applied to the columns.
(…
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Hi, i used pip install and had this same null error.
What is the solution?
package…
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## Constant Memory mode
The Python version of `xlsxwriter` has a [`constant_memory`] mode that limits the amount of data stored in memory.
[`constant_memory`]: https://xlsxwriter.readthedocs.io/…
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### Pandas version checks
- [X] I have checked that this issue has not already been reported.
- [X] I have confirmed this bug exists on the [latest version](https://pandas.pydata.org/docs/whatsnew/i…
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#### Code Sample, a copy-pastable example if possible
This should be copy-pastable and self-contained:
```python
import pandas as pd
get_df = lambda : pd.DataFrame( {'DATETIME' : pd.to_datetim…
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The problem:
When I make a data frame with pandas that has columns with different length and type, I cannot re-assign an element inside it using loc. I can explain it better with an example:
```p…