The conversion method between r language and pyhthon data shaping and length and width
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Data length-width conversion is a common requirement, especially when summary tables are imported from Excel, they often need to be converted to one-dimensional tables (long data) before they can be provided to chart functions or models.
In the R language, there are two main packages that provide data length-width conversion:
Reshape2::melt/dcast
Tidyr::gather/spread
Library ("reshape2")
Library ("tidyr")
Mydata