python基础教程100例题： 33 --- 38

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l = [5,9,8,7]
','.join(str(i) for i in l)

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def runoob(i):
    return print('RUNOOB' * i)
runoob(3)

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##1
class bcolors():
    BLACK = '33[30m'
    RED = '33[31m'
    GREEN = '33[32m'
    YELLOW = '33[33m'
    BLUE = '33[34m'
    MAGENTA = '33[35m'
    CYAN = '33[36m'
    WHITE = '33[37m'
    UNDERLINE = '33[4m'  #下划线
    RESET = '33[0m'  #默认值

print (bcolors.BLACK + "颜色" )


##2
s = 'hello world'
print('33[1;31m  %s 33[0m' %s )

##3
print('x1b[6;31;42m' + 'Success!' + 'x1b[0m')

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count = 0  # 计数，只要比100小就一直循环，直到找到所有100以内的素数
x = 2
while count < 100:
    for i in range(2, x):
        if x % i == 0:
            break
    else:
        print(x)
        count += 1
    x += 1

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def swap(lst, i, j):
    x = lst[i]
    lst[i] = lst[j]
    lst[j] = x
    return lst
def selection_sort_v2(lst):
    for i in range(len(lst)):
        min_index = i
        for j in range(i + 1, len(lst)):
            if lst[j] < lst[min_index]:
                min_index = j
        swap(lst, i, min_index)

lst = [12,23, 4, 15, 5,11,25]
print(swap(lst, 1, 2))

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def bubble_sort(lst):
    for j in range(len(lst) - 1):
        for i in range(len(lst) - 1):
            if lst[i] > lst[i + 1]:
                swap(lst, i ,i + 1)

bubble_sort(lst)
print(lst)

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sorted(lst)
lst.sort()
print(lst)

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import numpy as np
a = np.array([[1, 2, 3], [4, 5, 6],[7, 8, 9]])  #np.map
print(a.trace())  #迹