初识Python_技术问答

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初识Python

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ruyun困

for i in range(1,101):
if i%7==0:
print(i)

0 9-1 什么是迭代

2018-05-05

ruyun困

def firstCharUpper(s):
return s[0].upper()+s[1:]

print firstCharUpper('hello')
print firstCharUpper('sunday')
print firstCharUpper('september')

0 8-3 对字符串切片

2018-05-05

慕先生2558033

sum = 0
x = 1
while x < 100:
sum = (x * 2 - 1) + sum
x = x + 1
print sum

1 5-5 Python之 while循环

2018-05-05

ruyun困

L = range(1, 101)
print L[-10:]
print L[4::5][-10:]

0 8-2 倒序切片

2018-05-05

ruyun困

L = range(1, 101)

print L[0:10]
print L[2:101:3]
print L[4:50:5]

1 8-1 对list进行切片

2018-05-05

ruyun困

def average(*args):
s = 0.0
n = 0
if args:
for x in args:
s+=x
n+=1
return s/n
else:
return 0.0
print(average())
print(average(1, 2))
print (average(1, 2, 2, 3, 4))

0 7-7 Python之定义可变参数

2018-05-05

ruyun困

def greet(x='world'):
print('Hello,'+'%s.'%x)

greet()
greet('Bart')

0 7-6 Python之定义默认参数

2018-05-05

ruyun困

def move(n, a, b, c):
if n==1:
print(a+'-->'+c)
return 0
else:
move(n-1,a,c,b)
move(1,a,b,c)
move(n-1,b,a,c)

move(4, 'A', 'B', 'C')

0 7-5 Python之递归函数

2018-05-05

张蛋熊

#coding=utf-8
print "Python was started in 1989 by \"Guido\".\nPython is free and easy to learn."

1 3-5 Python中定义字符串

2018-05-05

筱岸诗音

x1 = 1
d = 3
n = 100
x100 = x1+d*(n-1)
s = (x1+x100)*n/2
print s
简直变态到无法容忍，s = (x1+x100)*n/2与s = (x1+x100)/2*n
有什么不同，结果就是不对，python啊

2 3-4 Python中什么是变量

2018-05-05

赵华男

d = {
'Adam':95,
'Lisa':85,
'Bart':59
}
for key in ['Adam','Lisa','Bart']:
print key, ':', d.get(key)

0 6-2 Python之访问dict

2018-05-05

慕神7329823

L=['1','2','3','4','5','6','7','8','9',]
M=['0','1','2','3','4','5','6','7','8','9',]
K=[a+b+c for a in L for b in M for c in M if a==c]
D=[]
for x in K:
D.append(int(x))
print D

我感觉自己是个神经病………………

2 10-4 多层表达式

2018-05-05