50多个Thonny实例代码-Python初学者的福⾳有不少同学反映我之前发的Python代码太⾼级看不懂，让写点简单的代码实例集供他们学习。
下⾯就来分享50多个实例吧，特别适合初学者
实例1：
print('hello world')
实例2：
x =55/11
print(x)
实例3：
x =50*2+(60-20)/4
print(x)
实例4：
# This is a comment
answer =42# the answer
# Now back to the puzzle
text ="# Is this a comment?"
print(text)
实例5：
x ='silent'
print(x[2]+ x[1]+ x[0]
+ x[5]+ x[3]+ x[4])
实例6：
squares =[1,4,9,16,25]
print(squares[0])
实例7：
word ="galaxy"
print(len(word[1:]))
实例8：
x =50//11
print(x)
实例9：
print(3*'un'+'ium')
实例10：
x ='py''thon'
print(x)
实例11：
print(sum(range(0,7)))
cubes =[1,8,27]
cubes.append(4**3)
print(cubes)
实例13：
word ="galaxy"
print(word[4:50])
实例14：
x =51%3
print(x)
实例15：
def if_confusion(x, y):
if x > y:
if x -5>0:
x = y
return"A"if y == y + y else"B"
elif x + y >0:
while x > y: x -=1
while y > x: y -=1
if x == y:
return"E"
else:
if x -2> y -4:
x_old = x
x = y * y
y =2* x_old
if(x -4)**2>(y -7)**2:
return"C"
return"D"
return"H"
print(if_confusion(3,7))
实例16：
x ='cool'
print(x[-1]+ x[-2]
+ x[-4]+ x[-3])
实例17：
words =['cat','mouse']
for word in words:
print(len(word))
实例18：
def func(x):
return x +1
f = func
print(f(2)+ func(2))
实例19：
word ="galaxy"
print(word[:-2]+ word[-2:])
def func(a,*args):
print(a)
for arg in args:
print(arg)
func("A","B","C")
实例21：
def ping(i):
if i >0:
return pong(i -1)
return"0"
汇编语言要什么基础def pong(i):
if i >0:
return ping(i -1)
return"1"
print(ping(29))
实例22：
word ="bender"
print(word[1:4])
实例23：
customers =['Marie','Anne','Donald'] customers[2:4]=['Barack','Olivia','Sophia'] print(customers)
实例24：
def ask(prompt, retries=4, output='Error'): for _ in range(retries):
response =input(prompt).lower() if response in['y','yes']:
return True
if response in['n','no']:
return False
print(output)
print(ask('Want to know the answer?',5))
实例25：
letters =['a','b','c','d']
print(len(letters[1:-1]))
实例26：
a =['a','b']
n =[1,2]
x =[a, n]
print(x[1])
实例27：
letters =['a','b','c',
'd','e','f','g']
letters[1:]=[]
print(letters)二叉树遍历的非递归实现
实例28：
# Fibonacci series:
a, b =0,1
while b <5:
print(b)
a, b = b, a + b
实例29：
for num in range(2,8):
if not num %2:
continue
print(num)
实例30：
print(range(5,10)[-1])
print(range(0,10,3)[2])
print(range(-10,-100,-30)[1])
实例31：
def matrix_find(matrix, value):
if not matrix or not matrix[0]:
return False
j =len(matrix)-1
for row in matrix:bak文件怎么打开
while row[j]> value:
j = j -1
if j ==-1:
return False
if row[j]== value:
return True
return False
matrix =[[3,4,4,6],
[6,8,11,12],
[6,8,11,15],
[9,11,12,17]]
print(matrix_find(matrix=matrix, value=11))
实例32：
def maximum_profit(prices):
'''Maximum profit of a single buying low and selling high'''
profit =0
for i, buy_price in enumerate(prices):
sell_price =max(prices[i:])
profit =max(profit, sell_price - buy_price)
return profit
# Ethereum daily prices in Dec 2017 ($)
eth_prices =[455,460,465,451,414,415,441]
print(maximum_profit(prices=eth_prices))
importance的高级替换实例33：
def bubble_sort(lst):
'''Implementation of bubble sort algorithm'''
for border in range(len(lst)-1,0,-1):
for i in range(border):
if lst[i]> lst[i +1]:
lst[i], lst[i +1]= lst[i +1], lst[i] return lst
list_to_sort =[27,0,71,70,27,63,90]
print(bubble_sort(lst=list_to_sort))
实例34：
def concatenation(*args, sep="/"):
return sep.join(args)
print(concatenation("A","B","C", sep=","))
实例35：
x =5*3.8-1
print(x)
实例36：
def bsearch(l, value):
lo, hi =0,len(l)-1
while lo <= hi:
mid =(lo + hi)//2
if l[mid]< value:
lo = mid +1
elif value < l[mid]:
hi = mid -1
else:
return mid
return-1
l =[0,1,2,3,4,5,6]
x =6
print(bsearch(l,x))
实例37：
words =['cat','mouse','dog']
for word in words[:]:
if len(word)>3:
words.insert(0, word)
print(words[0])
实例38：
def make_incrementor(n):
return lambda x: x + n
f = make_incrementor(42)
print(f(0))
python基础代码100例
print(f(1))
实例39：模块代码是什么

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