In this question, I want to ask how to count specific character in list using python:
The example of list are following below:
aList = [123, 'Xyz', 'zaRa', 'Abc', 123];
How to count "X", "R", "A" characters in that list?
The desired output is following below:
X = 1
R = 1
A = 1
Map every element to a string, then stick them all together, then use the count() string method.
aList = [123, 'Xyz', 'zaRa', 'Abc', 123]
mystring = ''.join(map(str, aList))
for letter in 'XRA':
print('{} = {}'.format(letter, mystring.count(letter)))
I would use collections.Counter , something like this -
>>> from collections import Counter
>>> aList = [123, 'Xyz', 'zaRa', 'Abc', 123]
>>> astr = ''.join(map(str,aList))
>>> Counter(astr)
Counter({'3': 2, 'z': 2, 'a': 2, '2': 2, '1': 2, 'A': 1, 'X': 1, 'R': 1, 'b': 1, 'c': 1, 'y': 1})
>>> c = Counter(astr)
>>> c['X']
1
>>> c['R']
1
>>> c['A']
1
In [6]: ''.join([ item for item in aList if type(item) == str ]).count('X')
Out[6]: 1
In [7]: ''.join([ item for item in aList if type(item) == str ]).count('R')
Out[7]: 1
In [8]: ''.join([ item for item in aList if type(item) == str ]).count('A')
Out[8]: 1
