dokuwiki:draft:Practice
見出しレベル1
ここに見出しレベル1のテキスト
見出しレベル2
ここに見出しレベル2のテキスト(以下同様)
見出しレベル3
### num = 1 name = 'mnz' print(num, type(num), name, type(name)) print('Hi', 'Mike', sep=',', end='\n') print('Hi', 'Mike', sep=',', end='.\n') ### print(2 + 2) print(17 / 3) print(17 // 3) print(17 % 3) print(5 ** 5) print(round(3.141516, 2)) ### import math math.sqrt(25) math.log2(10) print(help(math)) ### print('I don\'t know') print('say "I don\'t know"') print("say \"I don't know\"") print(r'c:\mnz\mnz') print(""" line1 line2 line3 """) print('#########') print("""\ line1 line2 line3\ """) print('#########') print('Py''thon') print('Py' + 'thon') prefix = 'Py' print(prefix'thon') ###NG print(prefix + 'thon') s = ('aaaaaaa' 'bbbbbb') print(s) s = 'aaaaaaa'\ 'bbbbbb' print(s) word = 'Python' print(word[0]) print(word[1]) print(word[-1]) print(word[0:2]) print(word[:2]) print(word[2:]) word = 'J' + word[1:] print(word) print(len(word)) ### リスト l = [1, 2, 3, 4, 5, 6] print (l[0]) print (l[::2]) ### ネスト a = ['a', 'b', 'c'] n = [1, 2, 3] x = [a, n] x [['a', 'b', 'c'], [1, 2, 3]] x [0][1] 'b' ### リスト操作 s = ['a', 'b', 'c', 'd', 'e', 'f', 'g'] s ['a', 'b', 'c', 'd', 'e', 'f', 'g'] s[0] = 'x' s ['x', 'b', 'c', 'd', 'e', 'f', 'g'] s[2:5] = ['C', 'D', 'E'] s ['x', 'b', 'C', 'D', 'E', 'f', 'g'] s[2:5] = [] s ['a', 'b', 'f', 'g'] s[:] = [] s [] n = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10] n.append(100) n [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 100] n.insert(0, 200) n [200, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 100] n.pop() 100 n [200, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10] n.pop(0) 200 n [1, 2, 3, 4, 5, 6, 7, 8, 9, 10] del n[0] n [2, 3, 4, 5, 6, 7, 8, 9, 10] del n n Traceback (most recent call last): File "<stdin>", line 1, in <module> NameError: name 'n' is not defined n = [1, 2, 2, 2, 3] n.remove(2) n [1, 2, 2, 3] n.remove(2) n.remove(2) n [1, 3] n.remove(2) Traceback (most recent call last): File "<stdin>", line 1, in <module> ValueError: list.remove(x): x not in list a = [1, 2, 3, 4, 5] b = [6, 7, 8, 9, 10] a += b a [1, 2, 3, 4, 5, 6, 7, 8, 9, 10] x = [1, 2, 3, 4, 5] x.extend(b) x [1, 2, 3, 4, 5, 6, 7, 8, 9, 10] ### リストのメソッド r = [1, 2, 3, 4, 1, 2, 3] r.index(3) 2 r.index(3, 3) 6 r.count(3) if 4 in r: ... print(r) ... [1, 2, 3, 4, 1, 2, 3] if 4 in r: ... print('exist') ... exist r.sort() r [1, 1, 2, 2, 3, 3, 4] r.sort(reverse=True) r [4, 3, 3, 2, 2, 1, 1] r.sort() r [1, 1, 2, 2, 3, 3, 4] r.sort(reverse=True) r [4, 3, 3, 2, 2, 1, 1] r.re r.remove( r.reverse( r.reverse() r [1, 1, 2, 2, 3, 3, 4] s = 'My name is Mike.' to_split = s.split(' ') to_split ['My', 'name', 'is', 'Mike.'] x = ' '.join(to_split) x 'My name is Mike.' i = [1, 2, 3, 4, 5] j = i j[0] = 100 i, j ([100, 2, 3, 4, 5], [100, 2, 3, 4, 5]) j = i.copy() j[0] = 100 i, j ([1, 2, 3, 4, 5], [100, 2, 3, 4, 5]) ################### seat = [] min = 0 max = 5 min <= len(seat) < max True seat.append('p') seat ['p'] seat.append('p') seat.append('p') seat.append('p') seat.append('p') min <= len(seat) < max False
dokuwiki/draft/Practice.txt · 最終更新: 2023/01/07 by admin
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