[ astype does not work for Pandas dataframe ]
I have a dataframe called messages where data looks like
message length class
hello, Come here 16 A
hi, how are you 15 A
what is it 10 B
maybe tomorrow 14 A
When i do
It shows me
Then I tried converting message column to string type
messages['message'] = messages['message'].astype(str)
It still shows me
What am I doing wrong. Why doesn't it convert to string?
Python version 2.7.9 On windows 10
Pandas version 0.15.2
There is no "string" datatype. In pandas, strings are stored as objects.
In numpy, you can have string datatypes, but they're fixed-length, so there's still no "string datatype". There's a datatype for 5-character strings, a datatype for 10-character strings, etc., but no datatype for "strings" per se. Pandas uses
object as the datatype for strings so that you can perform size-changing manipulations on the strings (e.g., concatenating them with other strings) without having to recreate the entire column with a new string length.