46 exercice solution (incompleted)

#!/usr/bin/env python
# -*- coding: utf-8 -*-

# http://www.ling.gu.se/~lager/python_exercises.html
# Wroten by mohamedAziz
#-----------------------------------
# ex 1
def max(nb1, nb2) :
    if nb1 > nb2 :
        return nb1
    elif nb2 > nb1 :
        return nb2
    else: return nb1
#print max(46, 80)
#-----------------------------------
# ex 2
def max_of_three(nb1, nb2, nb3) :
    a = max(nb1, nb2)
    b = max(a, nb3)
    return max(a, b)
#print(max_of_three(33, 46, 12))
#-----------------------------------
# ex 3
def leng(s):
    count = 0
    for c in s:
        count += 1
    return count
#print(leng(['mohamed', 'ali']))
#-----------------------------------
# ex 4
def vowel(ch):
    if ch.upper() in ['A', 'E', 'I', 'O', 'U', 'Y'] :
        return True
    else:
        return False
#print(vowel('A'))
#-----------------------------------
# ex 5
# the definition of consonant -> http://en.wikipedia.org/wiki/Consonant
# B, C, D, F, G, H, J, K, L, M, N, P, R, S, T, V, X, Z, and usually W and Y
def translate(s):
    phrase = ''
    for ch in s :
        if ch.upper() in ['B', 'C', 'D', 'F', 'G', 'H', 'J',
        'K', 'L', 'M', 'N', 'P', 'R', 'S', 'T', 'V', 'X', 'Z', 'W', 'Y'] :
            ch = ch + 'o' + ch
        phrase += ch
    return phrase
#print(translate("this is fun"))
#-----------------------------------
# ex 6
def sum(l):
    sm = 0
    for nb in l :
        sm += nb
    return sm

def multiply(l):
    mu = 1
    for nb in l :
        mu *= nb
    return mu
#print(sum([1, 2, 3, 4]))
#print(multiply([1, 2, 3, 4]))
#-----------------------------------
# ex 7
def reverse(s):
    reversed1 = ''
    for ch in s :
        reversed1 = ch + reversed1
    return reversed1
#print(reverse('mohamed'))
#-----------------------------------
# ex 8
def is_palindrome(s):
    if reverse(s) == s :
        return True
    else :
        return False
#print(is_palindrome('radar'))
#-----------------------------------
# ex 9
def is_member(x, a):
    rep = False
    for xx in a :
        if xx == x :
            rep = True
    if rep == True :
        return True
    else :
        return False
#print(is_member(6, [4, 6, 8]))
#-----------------------------------
# ex 10
def overlapping(l1, l2) :
    for x1 in l1 :
        if is_member(x1, l2) == True :
            return True; break
        else :
            return False
#print(overlapping(['mohamed', 'aziz', 'ali'], ['omar', 'mohamed']))
#-----------------------------------
# ex 11
def generate_n_chars(nb, x) :
    ret = ''
    for t in range(nb) :
        ret += x
    return ret
#print(generate_n_chars(5, 'x'))
#-----------------------------------
# ex 12
def histogram(l) :
    for h in l :
        print(generate_n_chars(h, '*'))
#histogram([4, 9, 7])
#-----------------------------------
# ex 13
def max_in_list(l) :
    maxi = l[0]
    for nb in l :
        if nb > maxi :
            maxi = nb
    return maxi
#print(max_in_list([33, 12, 46]))
#-----------------------------------
# ex 14
def word2integer(lw) :
    li = []
    for w in lw :
        li.append(leng(w))
    return li
#print(word2integer(['mohamed', 'ali', 'omar']))
#-----------------------------------
# ex 15
def find_longest_word(l) :
    maxi = leng(l[0])
    for w in l :
        if leng(w) > maxi :
            maxi = leng(w)
    return maxi
#print(find_longest_word(['ali', 'omar', 'mohamed']))
#-----------------------------------
# ex 16
def filter_long_words(lw, n) :
    lwn =[]
    for w in lw :
        if leng(w) > n :
            lwn.append(w)
    return lwn
#print(filter_long_words(['ali', 'omar', 'mohamed'], 4))
#-----------------------------------
# ex 18
# continuez a ecrire
def pangram(se) :
    import string
    bb = ''
    maxi = ord[se[0].lower()]
    for x in se :
        if 97 <= ord(x.lower()) <= 122 :
            if maxi > ord(x.lower()):
                pass

#-----------------------------------
# ex 19