iCode2:
Oh I just checked again now. I misunderstood the question. I was working on returning an item in the list as a string separated by comma with an and before the last item. Something like... Returning the first index as 'a, p, p, l, e, and s'.

Will that work?

iCode2:
Oh I just checked again now. I misunderstood the question. I was working on returning an item in the list as a string separated by comma with an and before the last item. Something like... Returning the first index as 'a, p, p, l, e, and s'.

Will that work?

spam = ['apples', 'bananas', 'tofu', 'cats']

def printlist(List):
    last=List.pop()
    last=' and '+last
    List.append(last)
    return ','.join(List)
    
def wordlist(List):
    for word in List:
        print(printlist(list(word)))
        
        
wordlist(spam)

gbolly1151:

Dont mind my naming

spam = ['apples', 'bananas', 'tofu', 'cats']

def printlist(List):
    last=List.pop()
    last=' and '+last
    List.append(last)
    return ','.join(List)
    
def wordlist(List):
    for word in List:
        print(printlist(list(word)))
        
        
wordlist(spam)

iCode2:
Hmmmm you've so grabbed Python concept. I hope to be like you when I grow up.

gbolly1151:

It is not about the language, it is about data structure and algorithm sir

iCode2:
Did you take any course on that or you got to understand it over time?

gbolly1151:

No course just pdf
You can download this pdf Data Structures and Algorithms in Python by Michael T. Goodrich

Predstan:


I am using one by Rance D. Necaise. Do you have the link to the pdf?

gbolly1151:


It should be first on Google search sir

gbolly1151:

No course just pdf
You can download this pdf Data Structures and Algorithms in Python by Michael T. Goodrich

Predstan:


Keeps directing me to buy the book. I dont know if its because of my Location

iCode2:
Okay thanks. Which area do you major? Web dev or data science?

gbolly1151:


Sorry bro...i should have sent the link

https://www.google.com/url?sa=t&source=web&rct=j&url=http://predmet.singidunum.ac.rs/pluginfile.php/14584/mod_folder/content/0/Data%2520Structures%2520and%2520Algorithms%2520in%2520Python%2520%255BGoodrich%252C%2520Tamassia%2520%2520Goldwasser%25202013-03-18%255D.pdf%3Fforcedownload%3D1&ved=2ahUKEwiqvev2rY7qAhXS2aQKHYGzDeoQFjAAegQIBhAB&usg=AOvVaw0_J9ADcYtLK-LBzI7uQkuW


Or search for

Data Structures and Algorithms in Python Michael T. Goodrich Department of Computer Science University of California, Irvine Roberto Tamassia Department of Computer Science Brown University Michael H. Goldwasser Department of Mathematics and Computer Science Saint Louis University pdf

gbolly1151:


I really want to specialize in software development (in Blockchain space)

iCode2:
Nice! You're set for it.

iCode2:
spam = ['apples', 'bananas', 'tofu', 'cats']

Write a function that takes a list value as an argument and returns a string with all the items separated by a comma and a space, with and inserted before the last item. For example, passing the previous spam list to the function would return 'apples, bananas, tofu, and cats'. But your function should be able to work with any list value passed to it.

x='' 
y='hello' 
print('bool of x is ',bool(x)) #output: False
print('bool of y is ',bool(y)) #output: True

fruits = ['banana','orange', 'apple', 'pear', 'banana', 'kiwi', 'apple', 'banana']
#let get first position of banana
print(fruits.index('banana')) #output: 0

#To specify where searching to begin,add optional arguement start position

print(fruits.index('banana',5)) #output: 7

# The searching start from kiwi i.e  fruits[5:]

#you can also specify where searching should stop

print(fruits.index('banana',1,5)) #output:4

#here searching begin at position 1 (orange) and end at position 5(kiwi)

age=1

while age > 0:
    age=input('enter your age:')
    print('your age is ',age)

sex='F'
if sex == 'M' or 'm':
   print('Male')
else: 
   print('Female')

#ouput : Male

sex = 'F'
if True:
   print('Male')
else:
   print('Female')

sex='F'

if sex == 'M' or sex == 'm':
   print('Male')
else: 
   print('Female')

#output: Female

class Profile:
    def __init__(self,name,age,sex,nationality):
        self.name=name
        self.age=age
        self.sex=sex
        self.nationality= nationality
        
 
obj=Profile('sam',20,'M','Nigeria')
#it is boring to access each attribute using attribute name like this
print(obj.name)
print(obj.age)
print(obj.sex)
print(obj.nationality,'\n')

'''
output:
sam
20
M
Nigeria

problem with that approch is that,it is boring
to update and write for large attribute,the lines of
code to use is equal to number of attributes 
'''

# A fast approach is using vars() 

for key,value in vars(obj).items():
    print(value)
    
'''
output:
sam
20
M
Nigeria

example1
this for loop statement end with the help of break so
else statment wont be excecuted

for i in range(1,5):
    print(i)
    if i == 4: break
else:
    print('hi')

output: 
1
2
3
4

example2
this for loop statement end without the help of
break,so else statement get executed

for i in range(1,5):
    print(i)
else:
    print('hi')

output: 
1
2
3
4
hi

example3
using while loop 

start=1
while True:
     print(start)
     start += 1
     if start == 5: break
else:
   print('hi') 
   

output:
1
2
3
4

start=1
while start < 5:
     print(start)
     start += 1
else:
   print('hi') 

output:
1
2
3
4
hi

Example:
class Person:
    p=locals()
    def __init__(self,fname,lname,age):
        self.fname=fname
        self.lname=lname
        self.age=age

    def fullname(self):
        return '{0} {1}'.format(self.fname,self.lname)

Bob=Person('bob','alex',20)
print(hasattr(Bob,'fname')) #return True
print(hasattr(Bob,'lname')) #return True
print(hasattr(Bob,'fullname')) #return True
print(hasattr(Bob,'age')) #return True
print(hasattr(Bob,'DOB')) #return False

print(getattr(Bob,'lname')) #same as Bob.lname return alex
print(getattr(Bob,'fullname')) #return function object like <bound object....at 0xefbad> same as Bob.fullname
print(getattr(Person,'fullname')) #same as Person.fullname

setattr(Bob,'age',40) #same as bob.age=40
print(Bob.age) #return 40

l=[2]
l.append(l.append(1))
print(l) 
#TRY GUESSING.....
#output: [2,1,None]

'''
WHY None?
reason behind this output is that
append() is a method that only add value at the
end of the list,so it does not have return value.
By default,None is returned if you dont specify
return value in a function

e.g
'''
def fun():
   v=5

print(fun())  #output: None

'''
so we can break it like this
'''
l=[2]
v=l.append(1) # v = None
l.append(v)
print(l) #output: [2,1,None]

#EXAMPLE OF MISTAKE YOU MUST AVOID AS A BEGINNER USING PYTHON

print('example 1',1 is (not None)) # return False
print('example 2',1 is not None) # return True

'''
Before i explain why both statement return different value,Remenber that
'is' keyword in python is used to check if two objects have
the same id() and Note that, it is different from ==
which check if two objects have the same value

now let break down example 1;
1 is (not None)
(not None) in python will return True and
1 is True will return false because
1 and True represent different objects store with different id()
'''
print(not None) #return True

'''
Now example 2, 1 is not None
this check if id(1) is not id(None) and the answer
is True
'''
print(id(1),id(None))

gbolly1151:
Quite an age here

Predstan:

Yeah, where have you been? I don day use tensorflow