L=['Alice', 'Bob', 'Candy', 'David', 'Ellena']
L[0]='Ellena'
L[1]='Alice'
L[2]= 'Candy'
L[3]='David'
L[4]='Bob'
print(L)
L[0]='Ellena'
L[1]='Alice'
L[2]= 'Candy'
L[3]='David'
L[4]='Bob'
print(L)
2021-09-15
name=['Alice', 'Bob', 'Candy', 'David', 'Ellena']
name.insert(5,'Gen')
name.insert(6,'Phoebe')
name.append('Zero')
print(name)
L = ['Alice', 'Bob', 'Candy', 'David', 'Ellena']
L.append('Zero')
L.insert(5, 'Phoebe')
L.insert(5, 'Gen')
print(L)
name.insert(5,'Gen')
name.insert(6,'Phoebe')
name.append('Zero')
print(name)
L = ['Alice', 'Bob', 'Candy', 'David', 'Ellena']
L.append('Zero')
L.insert(5, 'Phoebe')
L.insert(5, 'Gen')
print(L)
2021-09-15
# Enter a code
num=0
L = ['Alice', 66, 'Bob', True, 'False', 100]
for a in L:
num=num+1
if num%2==0:
continue
print(a)
num=0
L = ['Alice', 66, 'Bob', True, 'False', 100]
for a in L:
num=num+1
if num%2==0:
continue
print(a)
2021-09-15
# Enter a code
s1="ABC"
S2="123"
S3="XYZ"
for a in s1:
for b in S2:
for c in S3:
print(a+b+c)
s1="ABC"
S2="123"
S3="XYZ"
for a in s1:
for b in S2:
for c in S3:
print(a+b+c)
2021-09-15
num=0
sum=0
while True:
if num>1000:
break
num=num+2
sum=num+sum
print(sum)
sum=0
while True:
if num>1000:
break
num=num+2
sum=num+sum
print(sum)
2021-09-15
# Enter a code
#coding:utf-8
age=21
if age>=18:
print('adult')
elif age>=6:
print('tennager')
elif age>=3:
print('kid')
else:
print('adult')
#coding:utf-8
age=21
if age>=18:
print('adult')
elif age>=6:
print('tennager')
elif age>=3:
print('kid')
else:
print('adult')
2021-09-15
# Enter a code
#coding:utf-8
age=19
if age>=18:
print('adult')
else:
print('teenager')
#coding:utf-8
age=19
if age>=18:
print('adult')
else:
print('teenager')
2021-09-15
# Enter a code
# coding:utf-8
age=19
if age>=18:
print('adult')
# coding:utf-8
age=19
if age>=18:
print('adult')
2021-09-15
# coding: utf-8
s1 = '這是中文字符串'
s2 = 'this is an English string'
print(s1+s2)
s1 = '這是中文字符串'
s2 = 'this is an English string'
print(s1+s2)
2021-09-15
# Enter a code
# -*- coding: UTF-8 -*-
template='Life is {0},you need {1}'
result=template.format('short','python')
print(result)
print('life is short,you need{}'.format('python'))
print('life is short,you need{launguage}'.format(launguage='python'))
# -*- coding: UTF-8 -*-
template='Life is {0},you need {1}'
result=template.format('short','python')
print(result)
print('life is short,you need{}'.format('python'))
print('life is short,you need{launguage}'.format(launguage='python'))
2021-09-15
# Enter a code
L = [75, 92, 59, 68, 99]
sum = 0.0
for x in L:
sum = sum + x
print(sum / 5)
L = [75, 92, 59, 68, 99]
sum = 0.0
for x in L:
sum = sum + x
print(sum / 5)
2021-09-14
# Enter a code
a=21
if a>=18:
print('adult')
elif a>= 6:
print('teenager')
elif a>= 3:
print('kid')
else:
print('baby')
a=21
if a>=18:
print('adult')
elif a>= 6:
print('teenager')
elif a>= 3:
print('kid')
else:
print('baby')
2021-09-14
這里,因為score = 59 < 60,所以if的判斷是True,因此就會執行print('抱歉,考試不及格')。
這里有幾個需要注意的地方:
可以看到print('抱歉,考試不及格')這行代碼明顯比上一行代碼縮進了,這是因為這行代碼是if判斷的一個子分支,因此需要縮進,在Python規范中,一般使用4個空格作為縮進
在if語句的最后,有一個冒號:,這是條件分支判斷的格式,在最后加入冒號:,表示接下來是分支代碼塊
這里有幾個需要注意的地方:
可以看到print('抱歉,考試不及格')這行代碼明顯比上一行代碼縮進了,這是因為這行代碼是if判斷的一個子分支,因此需要縮進,在Python規范中,一般使用4個空格作為縮進
在if語句的最后,有一個冒號:,這是條件分支判斷的格式,在最后加入冒號:,表示接下來是分支代碼塊
2021-09-14