I need to replace all the spaces in a dataframe column with a period. ie:
Original df:
    symbol
0   AEC
1   BRK A
2   BRK B
3   CTRX
4   FCE A
Desired result df:
    symbol
0   AEC
1   BRK.A
2   BRK.B
3   CTRX
4   FCE.A
Is there a way to do this without needing to iterate through each row, replacing the space one at a time? I prefer not to iterate one row at a time if there is a vectorized way to do things.