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# Enter a code
def greet(x='Hello,world'):
print(x)

greet('PPT')
greet()
# Enter a code
L = [75, 92, 59, 68, 99]
sum = 0.0
for ch in L:
sum = sum + ch
print(sum/len(L))
len=3.14
wid=1.57
result = round(len*wid,2)
print(result)
name="Hello World"
print(name)
_name="Hello World"
print(_name)
name_1="Hello World"
print(name_1)
# Enter a code
L = [x*x for x in range(101)]
print(sum(L))

L = []
x = 1
while x <= 100:
L.append(x*x)
x += 1
print(sum(L))

print(sum((x*x for x in range(101))))
d = {
'Alice': [45],
'Bob': [60],
'Candy': [75],
}


d['Alice'].extend([50, 61, 66])
d['Bob'].extend([80, 61, 66])
d['Candy'].extend([88, 75, 90])

for k,v in d.items():
print("{}:{}".format(k, v))
s1 = 'ABC'
s2 = '123'
s3 = 'xyz'

for x in s1:
for y in s2:
for z in s3:
print(x+y+z)
老师讲的好
num = 0
a = 0
while num<=1000:
if num%2 == 0:
a = a + num
num = num + 1
print(a)
结果是250500对么
def square_of_sum(L):
result=0
for num in L:
result=num*num+result
return result

k=[1,2,3,4,5,6,7,8,9,10]
ss=square_of_sum(k)
print(ss)
d = {'Alice': [50, 61, 66], 'Bob': [80, 61, 66], 'Candy': [88, 75, 90]}
key_idx = 0
value_idx = 0
for key in d.keys():
print(key)
for value in d.values():
print(value)
if value_idx == key_idx:
value_idx = value_idx + 1
break
key_idx = key_idx + 1
L1=['Alice', 'Bob', 'Candy', 'David', 'Ellena']
L2=[89, 72, 88, 79, 99]
L3=["","","","",""]
idx = 0

while idx < 5:
L3[idx] = str(L2[idx]) + L1[idx]
print(L3[idx])
idx = idx + 1
L3.sort(reverse=True)
print(L3)
idx = 0
for item in L3:
L1[idx] = item[2:10]
idx = idx+1
print(L1)
L=['Alice', 'Bob', 'Candy', 'David', 'Ellena']
L_insert=['Zero', 'Phoebe', 'Gen']
for item in L_insert:
L.append(item)
L.sort(reverse=False)
print(L)
template='Life is{0},you need {1}'
a='short'
b='Python'
result=template.format(a,b)
print(result)
num=1
advantage=1
while num<=10:
advantage=advantage*num
num=num+1
print(advantage)
课程须知
如果您了解程序设计的基本概念,会简单使用命令行,了解中学数学函数的概念,那么对课程学习会有很大的帮助,让您学起来得心应手,快速进入Python世界。
老师告诉你能学到什么?
通过本课程的学习,您将学会搭建基本的Python开发环境,以函数为基础编写完整的Python代码,熟练掌握Python的基本数据类型以及list和dict的操作,灵活使用流程控制语句。

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