1. capitalize() Converts the first character to upper case
2. casefold() Converts string into lower case
3. center() Returns a centered string
4. count()         Returns the number of times a specified value occurs in a string
5. encode() Returns an encoded version of the string
6. endswith() Returns true if the string ends with the specified value
7. expandtabs() Sets the tab size of the string
8. find()         Searches the string for a specified value and returns the position of where it was found
9. format() Formats specified values in a string
10. format_map() Formats specified values in a string
11. index()  Searches the string for a specified value and returns the position of where it was found
12. isalnum() Returns True if all characters in the string are alphanumeric
13. isalpha() Returns True if all characters in the string are in the alphabet
14. isdecimal() Returns True if all characters in the string are decimals
15. isdigit() Returns True if all characters in the string are digits
16. isidentifier() Returns True if the string is an identifier
17. islower() Returns True if all characters in the string are lower case
18. isnumeric() Returns True if all characters in the string are numeric
19. isprintable() Returns True if all characters in the string are printable
20. isspace() Returns True if all characters in the string are whitespaces
21. istitle() Returns True if the string follows the rules of a title
22. isupper() Returns True if all characters in the string are upper case
23. join()         Joins the elements of an iterable to the end of the string
24. ljust()  Returns a left justified version of the string
25. lower()         Converts a string into lower case
26. lstrip() Returns a left trim version of the string
27. maketrans() Returns a translation table to be used in translations
28. partition() Returns a tuple where the string is parted into three parts
29. replace() Returns a string where a specified value is replaced with a specified value
30. rfind()         Searches the string for a specified value and returns the last position of where it was found
31. rindex() Searches the string for a specified value and returns the last position of where it was found
32. rjust()         Returns a right justified version of the string
33. rpartition() Returns a tuple where the string is parted into three parts
34. rsplit() Splits the string at the specified separator, and returns a list
35. rstrip() Returns a right trim version of the string
36. split()         Splits the string at the specified separator, and returns a list
37. splitlines() Splits the string at line breaks and returns a list
38. startswith() Returns true if the string starts with the specified value
39. strip()         Returns a trimmed version of the string
40. swapcase() Swaps cases, lower case becomes upper case and vice versa
41. title()         Converts the first character of each word to upper case
42. translate() Returns a translated string
43. upper()         Converts a string into upper case
44. zfill()         Fills the string with a specified number of 0 values at the beginning

my-courses.net

Exercise 22

Write an algorithm in python that returns the list of duplicate elements of a given list without using any predefined functions in Python. Example if L = [7, 23, 5, 12, 7, 19, 23, 12, 29], the algorithm returns the list [7, 23, 12].

Solution

Exercise 12

Using the sort () method, write an algorithm in python as a function which takes as parameter a list L of numbers and which returns the couple (min, max) formed by the minimum and the maximum of the list.

Solution

def minMax(L):
     # sorting the liste
     L.sort()

     return (L[0] , L[-1])

# Exemple
L = [41, 19 , 5 , 21 ,7 , 11]

print(minMax(L)) # the out put is:  (5, 41)

Younes Derfoufi
my-courses.net

Exercise 11

Write an algorithm in python as a function which takes as parameter a tuple (L, n) formed by a list L of numbers and an integer n and which returns the list obtained from L by multiplying its elements by n . Example if L = [3, 9, 5, 23] and n = 2 the function returns the list: [6, 18, 10, 46]

Solution

Exercise 10

Write an algorithm in python as a function which takes as a parameter a tuple (L, x) formed by a list L and an element x and which returns the position of the element x in the list L. The function must return -1 if element x is not in the list.

Solution

Exercise9

Write an algorithm in python as a function which takes as parameter a tuple (L, a) formed by a list L and an element a and which returns True if the element a is present in the list L and False if no.

Solution

def examineList (L, a):
     if a in L:
          return True
     else: return False
# Example
L = [13, 9, 5, 23]
a = 5
print (examineList (L, a)) # the output is: True

Younes Derfoufi
my-courses.net

Exercise8

Write an algorithm in python that returns the average of the terms in a list of numbers.

Solution

def averageList (L):
    # initialization of the average
    m = 0
    for x in L:
        m = m + x
    # average = sum of the elements of L / length of L
    m = m / len(L)
    return m

# Example
L = [3, 7, 8, 2]
print ("the average is: m =", averageList (L))
# the output is: the average is: m = 5.0

 

Younes Derfoufi
my-courses.net