L=[75,92,59,68,99]
sum=0.0
for ch in L:
sum=sum+ch
print(sum/5)
sum=0.0
for ch in L:
sum=sum+ch
print(sum/5)
2021-01-07
age=8
if age>=18:
print('adult')
elif age>=6:
print('teenager')
elif age>=3:
print('kid')
else:
print('baby')
if age>=18:
print('adult')
elif age>=6:
print('teenager')
elif age>=3:
print('kid')
else:
print('baby')
2021-01-07
age=8
if age>=18:
print('adult')
elif age>=6:
print('teenager')
elif age>=3:
print('kid')
else:
print('baby')
if age>=18:
print('adult')
elif age>=6:
print('teenager')
elif age>=3:
print('kid')
else:
print('baby')
2021-01-07
>>> dongdongqiang=19
>>> if dongdongqiang>18:
... print('adult')
...
adult
>>> if dongdongqiang>18:
... print('adult')
...
adult
2021-01-07
>>> s='AABCDEFGHHIJ'
>>> abcdefgh=s[1:9]
>>> print(abcdefgh)
ABCDEFGH
>>> abcdefgh=s[1:9]
>>> print(abcdefgh)
ABCDEFGH
2021-01-07
>>> s1='这是一句中英文混合的Python字符串:Hello World!'
>>> print(s1)
这是一句中英文混合的Python字符串:Hello World!
>>> print(s1)
这是一句中英文混合的Python字符串:Hello World!
2021-01-07
T = ((1+2), ((1+2),), ('a'+'b'), (1, ), (1,2,3,4,5))
for a in T:
print(type(a))
结果:
<class 'int'>
<class 'tuple'>
<class 'str'>
<class 'tuple'>
<class 'tuple'>
所以是3个
for a in T:
print(type(a))
结果:
<class 'int'>
<class 'tuple'>
<class 'str'>
<class 'tuple'>
<class 'tuple'>
所以是3个
2021-01-07
>>> template='Life is short,you need {}'
>>> a='Python'
>>> result=template.format(a)
>>> print(result)
Life is short,you need Python
或者
>>> template='Life is short,{}'
>>> a='you need Python'
>>> result=template.format(a)
>>> print(result)
Life is short,you need Python
>>> a='Python'
>>> result=template.format(a)
>>> print(result)
Life is short,you need Python
或者
>>> template='Life is short,{}'
>>> a='you need Python'
>>> result=template.format(a)
>>> print(result)
Life is short,you need Python
2021-01-07
>>> template='Life is short,you need {}'
>>> a='Python'
>>> result=template.format(a)
>>> print(result)
Life is short,you need Python
或者
>>> template='Life is short,{}'
>>> a='you need Python'
>>> result=template.format(a)
>>> print(result)
Life is short,you need Python
>>> a='Python'
>>> result=template.format(a)
>>> print(result)
Life is short,you need Python
或者
>>> template='Life is short,{}'
>>> a='you need Python'
>>> result=template.format(a)
>>> print(result)
Life is short,you need Python
2021-01-07
可以参考一下我的:
num=0
sum=0
while num<=1000:
if num%2<>0:
num=num+1
continue
sum=sum+num
num=num+1
print(sum,num)
num=0
sum=0
while num<=1000:
if num%2<>0:
num=num+1
continue
sum=sum+num
num=num+1
print(sum,num)
2021-01-06
d = {
'Alice': [45],
'Bob': [60],
'Candy': [75],
};
socre_a=[50,61,66];
socre_b=[80,61,66];
socre_c=[88,75,90];
num=0;
while num<3:
d['Alice'].append(socre_a[num]);
d['Bob'].append(socre_b[num]);
d['Candy'].append(socre_c[num]);
num+=1;
print(d);
'Alice': [45],
'Bob': [60],
'Candy': [75],
};
socre_a=[50,61,66];
socre_b=[80,61,66];
socre_c=[88,75,90];
num=0;
while num<3:
d['Alice'].append(socre_a[num]);
d['Bob'].append(socre_b[num]);
d['Candy'].append(socre_c[num]);
num+=1;
print(d);
2021-01-06
>>> s='special string:\',",\\,\\\,\\n,\\t'
>>> print(s)
special string:',",\,\\,\n,\t
>>> print(s)
special string:',",\,\\,\n,\t
2021-01-05
#coding:UTF-8
num = 1
a=0
sum=0
while True:
if a>1000:
break
if a%2==1:
sum=sum+0
else:
sum=sum+a
a=a+2
print(sum)
num = 1
a=0
sum=0
while True:
if a>1000:
break
if a%2==1:
sum=sum+0
else:
sum=sum+a
a=a+2
print(sum)
2021-01-05