「自作Python100本ノック」11日目（71本〜80本目） ref: https://qiita.com/ahpjop/items/199d3a204f47588b40b8

q71.py

def good_number(n):
    n = str(n)
    if n[0] == n[1] == n[2] or n[1] == n[2] == n[3]:
        print("Yes, it is a good number")
    else:
        print("No, it isn't good nomber")

good_number(1116)

q72.py

def lucas(n):
    n = int(n)
    if n == 0:
        return 2
    elif n == 1:
        return 1
    else:
        return lucas(n - 1) + lucas(n - 2)

lucas(4)

q73.py

def put_formula(n):
    a,b,c,d = list(str(n))
    sign = "+-"
    aws_list = []
    for i in range(2):  # 1つ目の記号
        for j in range(2):  # 2つ目の記号
            for k in range(2):  # 3つ目の記号
                if eval(a+sign[i]+b+sign[j]+c+sign[k]+d) == 7:
                    aws = (str(a+sign[i]+b+sign[j]+c+sign[k]+d)+"=7")
                    aws_list.append(aws)
                    print(aws)
    if len(aws_list) == 0:
        print("impossible")

put_formula(1161)

q74.py

import requests
from bs4 import BeautifulSoup

r = requests.get('https://hikkoshi.suumo.jp/sankaku/')
soup = BeautifulSoup(r.text, 'html.parser')
titleTags = soup.select('a')
names = []
for titleTag in titleTags:
    name = titleTag.text.strip()
    names.append(name)
#distinct_names = list(set(names))

names_uniq = []
for d_name in names:
    if d_name not in names_uniq:
        names_uniq.append(d_name)


print(names_uniq)

q75.py

def first_word(text: str) -> str:
    if text.find(",")>= 0:
        text2= text.replace(',', ' ')
    if text.find(".")>=0:
        text2=text.replace('.', ' ')
    texts = text2.split()
    return texts[0]

first_word("..... greetings, friends")

q76.py

def second_index(text, symbol):
    count = 0
    for i in range(len(text)):
        if text[i] == symbol:
            count += 1
            if count == 2:
                return i
    return None

second_index("I am a good student but you are not a good student", "g")

q77.py

#株名と株価の辞書
stock_dict = {
    'CAC': 10.0,
    'ATX': 390.2,
    'WIG': 1.2
}

#１番高いストックを表示する関数
def best_stock(data):
    max = 0
    code = ""
    for stock in data:
        print(stock)
        if data[stock] > max:
            max = data[stock]
            code = stock
    return code

best_stock(stock_dict)

q78.py

def popular_words(text: str, words: list) -> dict:
    text = text.lower().split()
    count_list = []
    for word in words:
        count = text.count(word)
        count_list.append(count)
    aws = dict(zip(words, count_list))
    return aws

q79.py

def check_osxs(result):
    judge = "D"
    for i in range(3):
        if result[i][0] == result[i][1] == result[i][2] != ".":
            judge = result[i][0]
        elif result[0][i] == result[1][i] == result[2][i] != ".":
            judge = result[0][i]
    if result[0][0] == result[1][1] == result[2][2] != ".":
            judge = result[0][0]
    elif result[0][2] == result[1][1] == result[2][0] != ".":
            judge = result[0][2]
    return judge

check_osxs([
        "X.O",
        "XX.",
        "XOO"])

q80.py

def safe_pawns(pawns):
    pwans = list(pawns)
    cols = {"a":0,"b":1,"c":2,"d":3,"e":4,"f":5,"g":6,"h":7}
    s_pwans = []
    for i in pawns:
        target = []
        for j in pwans:
            if int(i[1])+1 == int(j[1]):
                target.append(j)
        for k in target:
            if abs(cols.get(k[0]) - cols.get(i[0])) == 1:
                s_pwans.append(k)
                if s_pwans.count(k) > 1:
                    s_pwans.pop()
    return len(s_pwans)

aws = {"b4","c4","d4","e4","f4","g4","e3"}
safe_pawns(aws)

例.py

checkio([
    "X.O",
    "XX.",
    "XOO"]) == "X"
checkio([
    "OO.",
    "XOX",
    "XOX"]) == "O"
checkio([
    "OOX",
    "XXO",
    "OXX"]) == "D"