tbotalla

# Convertir columna a string
total_rows['ColumnID'] = total_rows['ColumnID'].astype(str)

# Eliminar filas cuyo valor para la columna A son nan
df.dropna(subset=['A'])

# Distribucion de valores para una cierta columna
events['city'].value_counts()

# Chequear si una columna tiene algun valor null

tbotalla

https://askubuntu.com/questions/22381/how-to-format-a-usb-flash-drive

The Command-Line Way
In case you can't get your device formatted from the GUI, try this way.

Open the Terminal (Ctrl + Alt + T)

List your block storage devices by issuing the command lsblk
Then identify your pen drive by it's SIZE. In my case its /dev/sdb