- update
It takes a key-value pair and puts into the existing dictionary.
icecream = {'탱크보이': 1200, '폴라포': 1200, '빵빠레': 1800, '월드콘': 1500, '메로나': 1000}
new_product = {'팥빙수':2700, '아맛나':1000}
icecream.update(new_product)
icecream
>>>
{'탱크보이': 1200,
'폴라포': 1200,
'빵빠레': 1800,
'월드콘': 1500,
'메로나': 1000,
'팥빙수': 2700,
'아맛나': 1000}
- islower
Checks if all the characters in the text are in lower case.
user_input=input()
if user_input.islower():
print(user_input.upper())
else:
print(user_input.lower())
- if in
If a particular value is present after in, it returns True.
disits_3=str(user_input[:3])
if disits_3 in ['010','011','012']:
print('강북구')
else:
pass
>>>
강북구
- abs
Absolute, it returns the absolute value of the fiven number.
- reverse
It reverses the elements of the list.
a=['1','2','3']
a.reverse()
a
>>>
['3', '2', '1']
- pprint
Pretty-Print, for producing aesthetically representations of your data structures. The output is keep on a single line.
from pprint import pprint as pp
n={'alice': [1, 2, 3], 'bob': 20, 'tony': 15, 'suzy': 30,"dodo": [1,3,5,7], "mario": "pitch"}
pp(n)
>>>
{'alice': [1, 2, 3],
'bob': 20,
'dodo': [1, 3, 5, 7],
'mario': 'pitch',
'suzy': 30,
'tony': 15}
- add
Add the element to the set.
k={100,200}
k.add(300)
k
>>>
{100, 200, 300}
- discard
Eliminate the element from the set.
k={100,200}
k.discard(100)
k
>>>
{200, 300}
- | or union
Sum of sets operator.
k={200,300}
m={1,2,3}
a=k|m
a
>>>
{1, 2, 3, 200, 300}
- & or intersection
Intersection of sets operator.
- ^ or symmetric_difference
(Sum of sets)-(Intersection of sets)
- issubset
Return True if all items in set x are present in set y.
x={"a", "b", "c"}
y={"f", "e", "d", "c", "b", "a"}
x.issubset(y)
>>>
True
- issuperset
Return True if all items in the specified set exists in the original set.
x={"a", "b", "c"}
y={"f", "e", "d", "c", "b", "a"}
y.issuperset(x)
>>>
True
- isdisjoint
Return True if two sets have not intersection.
x={"a", "b", "c"}
y={"f", "e", "d", "c", "b", "a"}
x.isdisjoint(y)
>>>
False
- enumerate
Return a counter and the value from the iterable as a tuple at the same time.
for i in enumerate(list(range(0,11,2))):
print(i)
>>>
(0, 0)
(1, 2)
(2, 4)
(3, 6)
(4, 8)
(5, 10)for i, letter in enumerate(['A', 'B', 'C'], start=1):
print(i, letter)
>>>
1 A
2 B
3 C
- range
(start, end-1, width)
for i in range(2002,2051,4):
print(i)
>>>
2002
2006
2010
2014
2018
2022
2026
2030
2034
2038
2042
2046
2050