warning when using pandas read_csv

[jeroenbouwman]

A SyntaxWarning: invalid escape sequence '\s' is raised when using the read_csv function. All use of it where a '\s+' is used should be changed from:

df = pd.read_csv(files, sep='\s+', header=None)

to

df = pd.read_csv(files, sep=r'\s+', header=None)