Tuple Functions & Methods

 

Function	Description
all()	Unlike any(), all() returns True only if all items have a Boolean value of True. Otherwise, it returns False. Example : >>> marks=(32,43,3) >>> all(marks) True >>> marks=() >>> all(marks) True >>> marks=(32,'43',3) >>> all(marks) True >>> aTup=('1',1,True,'') >>> all(aTup) False
any()	If even one item in the tuple has a Boolean value of True, then this function returns True. Otherwise, it returns False. Example : >>> any(‘’, ‘32’, ‘’) True If even one item in the tuple has a Boolean value of True, then this function returns True. Otherwise, it returns False. >>> any(‘’, 32, ‘’) False    The string ‘0’ does have a Boolean value of True. If it was rather the integer 0, it would’ve returned False.
len()	Like a list, a Python tuple is of a certain length. The len() function returns its length. Example : >>> Subject=('English','Physics','Chemistry','Chemistry','IP') >>> len(Subject) 5 >>> salary=(30000,40000,25000) >>> len(salary) 3
sorted()	Return a new sorted tuple. It returns a list after sorting. Example : >>> Subject=('English', 'Physics', 'Chemistry', 'Chemistry', 'IP') >>> Subject ('English', 'Physics', 'Chemistry', 'Chemistry', 'IP') #output in tuple >>> sorted(Subject) ['Chemistry', 'Chemistry', 'English', 'IP', 'Physics'] #output in list >>> salary=(30000,40000,25000) >>> salary (30000, 40000, 25000) #output in tuple >>> sorted(salary) [25000, 30000, 40000] #output in list
tuple()	This function converts another construct into a Python tuple. Let’s look at some of those. Example : >>> Subject=['English', 'Physics', 'Chemistry', 'Chemistry', 'IP'] # value in list >>> Subject ['English', 'Physics', 'Chemistry', 'Chemistry', 'IP'] >>> tuple(Subject) # converts list into tuple ('English', 'Physics', 'Chemistry', 'Chemistry', 'IP')
index()	Finds the first index of given item and returns the index. Syntax: tuple.index(value, start, end) Example :  Subject=('English','Physics','Chemistry','Chemistry','IP') >>> Subject.index('Chemistry') 2 >>> Subject.index('CS') Traceback (most recent call last):   File "<pyshell#26>", line 1, in <module>     Subject.index('CS') ValueError: tuple.index(x): x not in tuple
count()	This method takes one argument and returns the number of times an item appears in the tuple. >>> employee=('Sachin','Arun','Varun', 'Saumya','Arun') >>> employee.count('Arun') 2