------------------------ built in types
-- tuples (immutables)
> empty = ()
> t = 12345, 54321, 'hello!'
or
> t = (12345, 54321, 'hello!')
> t
(12345, 54321, 'hello!')
-- set
-- tuples (immutables)
> empty = ()
> t = 12345, 54321, 'hello!'
or
> t = (12345, 54321, 'hello!')
> t
(12345, 54321, 'hello!')
-- set
> a=set()
> a.add("orange")
> a
{'orange'}
> basket = {'apple', 'orange', 'apple', 'pear', 'orange', 'banana'} # creates a set without duplicates
> basket.add("'orange")
> basket
{'orange', 'pear', 'apple', 'banana'}
> basket.add("'orange")
> basket
{'orange', 'pear', 'apple', 'banana'}
>
> my_data = {0,0}
> my_data
{0}
z_list = []
my_list = ["apple", "banana", "cherry"]
my_list.append("pear")
a_list=[0]
a_list = [66.25, 333, 333, 1, 1234.5]
a_list = ['foo', 'bar', 'bar']
a_list = [[ 4.9, 3. , 1.4, 0.2], [ 4.9, 3. , 1.4, 0.2]]
my_list = ["apple", "banana", "cherry"]
my_list.append("pear")
a_list=[0]
a_list = [66.25, 333, 333, 1, 1234.5]
a_list = ['foo', 'bar', 'bar']
a_list = [[ 4.9, 3. , 1.4, 0.2], [ 4.9, 3. , 1.4, 0.2]]
-- dictionaries (have keys)
> my_dict = {}
tel['john'] = 4444. # add
print (tel.keys()) # returns a list
> d={0:0}
> d
{0: 0}
tel = {'jack': 4098, 'sape': 4139}tel['john'] = 4444. # add
print (tel.keys()) # returns a list
dict_keys(['jack', 'sape', 'john'])
print (tel.values()) # returns a list
dict_values([4098, 4139, 4444])
to see all variables.
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