some new examples

This commit is contained in:
Mari Wahl 2014-08-25 13:47:59 -04:00
parent 5ed530430c
commit b50dc5d69d
84 changed files with 130 additions and 82 deletions

View file

@ -1,33 +0,0 @@
#!/usr/bin/python3
# mari von steinkirch @2013
# steinkirch at gmail
from collections import Counter
def Counter_example():
''' show some examples for Counter '''
''' it is a dictionary that maps the items to the number of occurences '''
seq1 = [1, 2, 3, 5, 1, 2, 5, 5, 2, 5, 1, 4]
seq_counts = Counter(seq1)
print(seq_counts)
''' we can increment manually or use the update() method '''
seq2 = [1, 2, 3]
seq_counts.update(seq2)
print(seq_counts)
seq3 = [1, 4, 3]
for key in seq3:
seq_counts[key] += 1
print(seq_counts)
''' also, we can use set operations such as a-b or a+b '''
seq_counts_2 = Counter(seq3)
print(seq_counts_2)
print(seq_counts + seq_counts_2)
print(seq_counts - seq_counts_2)
if __name__ == '__main__':
Counter_example()