from collections import Counter
s = "python java c++ c# php"
frequency = Counter(s)
for (key, value) in frequency.items():
print(key, " frequency : ", value)
'''
run:
p frequency : 3
y frequency : 1
t frequency : 1
h frequency : 2
o frequency : 1
n frequency : 1
frequency : 4
j frequency : 1
a frequency : 2
v frequency : 1
c frequency : 2
+ frequency : 2
# frequency : 1
'''