分享10提高 Python 代码的可读性的技巧

# -!- coding: utf-8 -!-
string = 'hello world'

# 方法1
new_str = string[::-1]
ic(new_str)

# 方法二
new_str2 = ''.join(reversed(string))
ic(new_str2)

'''
ic| new_str: 'dlrow olleh'
ic| new_str2: 'dlrow olleh'
'''

# 首字母大写
string = 'hello Python and world'

# 方法一
new_str = string.capitalize()
ic(new_str)


# 方法二
new_str2 = string.title()
ic(new_str2)

'''
ic| new_str: 'Hello python and world'
ic| new_str2: 'Hello Python And World'
'''

string = 'hellohellohello'
new_str = set(string)
# set类型
ic(new_str)
# 字符串类型
new_str = ''.join(new_str)
ic(new_str)

'''
ic| new_str: {'l', 'o', 'h', 'e'}
ic| new_str: 'lohe'
'''

a = 'hello'
b = 'world'
ic(a+b)

# 直接交换两个变量
a, b = b, a
ic(a+b)

'''
ic| a+b: 'helloworld'
ic| a+b: 'worldhello'
'''

score = [88, 99, 91, 85, 94, 85, 94, 78, 100, 80]
# 方法一
new_score = sorted(score)
ic('默认升序：', new_score)

score = [57, 29, 11, 27, 84, 34, 87, 25, 70, 60]
# 方法二
new_score2 = sorted(score, reverse=True)
ic('设置降序', new_score2)

'''
ic| '默认升序：', new_score: [78, 80, 85, 85, 88, 91, 94, 94, 99, 100]
ic| '设置降序', new_score2: [87, 84, 70, 60, 57, 34, 29, 27, 25, 11]
'''

# 生成10个10-100以内随机整数
numbers = [random.randint(10, 100) for x in range(10)]
ic(numbers)

# 输入5折后的价格
price = [800, 500, 400, 860, 780, 520, 560]
half_price = [(x*0.5)for x in price]
ic(half_price)

'''
ic| numbers: [64, 22, 80, 70, 34, 81, 74, 35, 85, 12]
ic| half_price: [400.0, 250.0, 200.0, 430.0, 390.0, 260.0, 280.0]
'''

lists = ['hello', 'world', 'python', 'java', 'c++']

# 合并字符串
new_str = ' '.join(lists)
ic(new_str)

'''
ic| new_str: 'hello world python java c++'
'''

string = 'hello world python java c++'
string2 = 'hello|world|python|java|c++'

# 拆分字符串
new_str = string.split(' ')
ic(new_str)

new_str2 = string2.split('|')
ic(new_str2)

'''
ic| new_str: ['hello', 'world', 'python', 'java', 'c++']
ic| new_str2: ['hello', 'world', 'python', 'java', 'c++']
'''

str = '20211202'

if str == str[::-1]:
    print('yes')
else:
    print('no')

'''
yes
'''

from collections import Counter
lists = ['a', 'a', 'b', 'b', 'b', 'c', 'd', 'd', 'd', 'd', 'd']

# 统计所有元素出现的次数
counts = Counter(lists)
ic(counts)

# 统计某一元素出现的次数
ic(counts['d'])

# 统计出现最多次数的一个元素
ic(counts.most_common(1))

'''
ic| counts: Counter({'d': 5, 'b': 3, 'a': 2, 'c': 1})
ic| counts['d']: 5
ic| counts.most_common(1): [('d', 5)]
'''