Why when i am getting u'' in front of column names when reading csv file in python pandas?

Question

i have a csv file in my local and i am reading that csv in using pd.read_csv()

Csv kinda looks like this say name df.csv

 # a     b       c
--------------------
"SS" |  1   |  Null
"GG" |  1   |  "lk"
"HH" |  2   |  "kk"

But when i am read this file in python

df1 = pd.read_csv(r"path/df.csv")
print(df1.columns)

out_put:

Index([u'# a', u' b', u' c', ],dtype='object')