Python-DS/chap01.py at master · dimitriborgers/Python-DS · GitHub

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#P29
import copy

def recFind(inputL):
    def find(inputL):
        possL = list()
        for i in range(len(inputL)):
            currentI = [inputL[i]]
            remainder = inputL[:i] + inputL[i+1:]

            if len(remainder) == 0:
                return currentI
            else:
                returnL = copy.deepcopy(recFind(remainder))

                for j in returnL:
                    tempCurrentI = copy.deepcopy(currentI)

                    if isinstance(j, list):
                        for k in j:
                            tempCurrentI.append(k)
                        possL.append(tempCurrentI)
                    else:
                        tempCurrentI.append(j)
                        possL.append(tempCurrentI)
        return possL
    return [''.join(b) for b in find(inputL)]

#P30
def counter(number, count=0):
    if number < 2:
        raise ValueError('too small')
    else:
        while number >= 2:
            number /= 2
            count += 1
    return count

# P31
def makechange(charge, given):
    difference = given - charge
    hund = difference // 100
    difference -= hund * 100
    twenties = difference // 20
    difference -= twenties * 20
    return ('hundred bills {0} twenty bills {1}'.format(hund, twenties))

# P32
def calculator():
    allL = list()
    temL = list()
    finished = False
    while finished == False:
        inputted = input('enter number, operator, or finish ')
        if inputted == 'finish':
            finished = True
        else:
            allL.append(inputted)
            print(allL)
    for i in range(len(allL)):
        if allL[i] == '*':
            times = int(allL[i-1])*int(allL[i+1])
            temL.pop()
            temL.append(times)
        elif allL[i-1] == '*':
            continue
        elif allL[i] == '/':
            divide = int(allL[i-1])/int(allL[i+1])
            temL.pop()
            temL.append(divide)
        elif allL[i-1] == '/':
            continue
        else:
            temL.append(allL[i])
    allL = temL
    temL = list()
    for i in range(len(allL)):
        if allL[i] == '+':
            times = int(allL[i-1])+int(allL[i+1])
            temL.pop()
            temL.append(times)
        elif allL[i-1] == '+':
            continue
        elif allL[i] == '-':
            divide = int(allL[i-1]) - int(allL[i+1])
            temL.pop()
            temL.append(divide)
        elif allL[i-1] == '-':
            continue
        else:
            temL.append(allL[i])
    return allL

# P33
def calc(previous=None):
    finished = False
    list1 = []
    if previous != None:
        list1.append(previous)
    while len(list1) < 3 and finished == False:
        inputted = input('#, op, finish or clear ')
        if inputted == 'clear':
            calc()
        elif inputted == 'finish':
            finished = True
        else:
            list1.append(inputted)
    if finished == False and isinstance(int(list1[0]), int) and isinstance(int(list1[2]), int) and list1[1] == '*':
        temp = int(list1[0])*int(list1[2])
        print(temp)
        calc(temp)

# P34
from random import *

list2 = ['$','#','FLor','??']

for i in range(100):
    list1 = list('I will never spam my friends again')
    randError = randrange(len(list1))
    list1[randError] = choice(list2)
    print(i+1,''.join(list1))

# P35
from random import *

def birthparadox(list1):
    list2 = []
    list3 = []
    for i in list1:
        for j in range(i):
            list2.append(randrange(365))
        if len(set(list2)) != len(list2):
            list3.append('paradox')
    return len(list3)/len(list1)
print(birthparadox([5,10,15,20,15,30, 35, 40]))

#P36
def counter():
    dic = {}
    for i in range(10):
        inputted = input('input word ')
        if inputted not in dic:
            dic[inputted] = 1
        else:
            dic[inputted] += 1
    return dic