print(sum)
sum=42
print(sum)
def inc(n):
sum=n+1
print(sum)
return sum
sum=inc(7)+inc(7)
print(sum)
1 空白 2 第二行的sum 3 函数里的sum 4 第十行的sum
任务2
def func1(a,b,c,d,e,f):
return [a,b,c,d,e,f]
def func2(a,b,c,*,d,e,f):
return [a,b,c,d,e,f]
def func3(a,b,c,/,d,e,f):
return [a,b,c,d,e,f]
print(func1(1,9,2,0,5,3))
print(func1(a=1,b=9,c=2,d=0,e=5,f=3))
print(func1(1,9,2,f=3,d=0,e=5))
print(func2(11,99,22,d=0,e=55,f=33))
print(func2(a=11,b=99,c=22,d=0,e=55,f=33))
print(func3(111,999,222,0,555,333))
print(func3(111,999,222,d=0,e=555,f=333))
是
list1=[1,9,8,4] print(sorted(list1)) print(sorted(list1,reverse=True)) print(sorted(list1,True))
def func(a,b,c,/,*,d,e,f):
return([a,b,c,d,e,f])
s=func(1,2,3,d=4,e=5,f=6)
print(s)
任务3
def solve(a,b,c):
delta=b*b-4*a*c
delta_sqrt=abs(delta**0.5)
p1=-b/2/a
p2=delta_sqrt/2/a
if delta>=0:
root1=p1+p2
root2=p1-p2
else:
root1=complex(p1,p2)
root2=complex(p1,-p2)
return root1,root2
print(solve.__doc__)
while True:
try:
t=input('输入一元二次方程系数abc,或者输入#结束：')
if t=='#':
print('结束计算，退出')
break
a,b,c=map(float,t.split())
if a==0:
raise ValueError('a=0,不是一元二次方程')
except ValueError as e:
print(repr(e))
print()
except:
print('有其它错误发生\n')
else:
root1,root2=solve(a,b,c)
print(f'root1={root1:.2f},root2={root2:.2f}')
print()
任务4
def list_generator(a,b,c=1):
i=a
s=[i]
while i<b:
i+=c
s.append(i)
return s
list1=list_generator(-5,5)
print(list1)
list2=list_generator(-5,5,2)
print(list2)
list3=list_generator(1,5,0.5)
print(list3)
任务5
def is_prime(s):
sum=0
for i in range(2,s):
if s%i==0:
sum+=i
ans=sum==0
return ans
for i in range(2,21,2):
s=[]
for j in range(2,i):
if is_prime(j)==True:
s.append(j)
for m in s:
if (i-m)in s:
print(f'{i}={m}+{i-m}')
break
任务6
list_s=['a','b','c','d','e','f','g','h','i','j','k',
'l','m','n','o','p','q','r','s','t','u','v','w','x','y','z']
list_b=['A','B','C','D','E','F','G','H','I','J','K',
'L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z']
def encoder(x):
re=[]
for i in str(x):
if i in list_s:
a=list_s.index(i)
if a<=20:
i=list_s[a+5]
re.append(i)
else:
i=list_s[a+5-26]
re.append(i)
elif i in list_b:
a=list_b.index(i)
if a<=20:
i=list_b[a+5]
re.append(i)
else:
i=list_b[a+5-26]
re.append(i)
else:
re.append(i)
re=''.join(re)
return re
def decoder(x):
re=[]
for i in str(x):
if i in list_s:
a=list_s.index(i)
if a>=5:
i=list_s[a-5]
re.append(i)
else:
i=list_s[a+26-5]
re.append(i)
elif i in list_b:
a=list_b.index(i)
if a>=5:
i=list_b[a-5]
re.append(i)
else:
i=list_b[a+26-5]
re.append(i)
else:
re.append(i)
re=''.join(re)
return re
x=input('输入英文文本:')
print(f'编码后的文本:{encoder(x)}')
y=encoder(x)
print(f'对编码后的文本解码:{decoder(y)}')
任务7
def collatz(n):
re=[n]
while True:
if n==1:
break
if n%2==0:
n=int(n/2)
re.append(n)
else:
n=3*n+1
re.append(n)
return re
n=input('Enter a positive intefer:')
try:
n=int(n)
if n<=0 :
raise
except:
print('Error: must be a positive integer')
else:
print(collatz(n))
任务8
def func(n):
if n==0:
return 0
else:
return 2*(func(n-1)+1)-1
while True:
x=input()
if x=='#':
print('计算结束')
break
n=int(x)
ans=func(n)
print(f'n={n},ans={ans}')
标签：return,函数,sum,编程,list,re,实验,print,def From： https://www.cnblogs.com/wangzhadan/p/17408182.html