初识Python_技术问答

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初识Python

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慕圣1024690

sum=+i ⇔ sum+=i.

1 5-4 Python之 for循环

2019-04-03

慕圣1024690

for 变量 in L or t
#遍历list or tuple 并赋值在变量这个值里面

0 5-4 Python之 for循环

2019-04-03

红陪绿

x1 = 1
d = 3
n = 100
x100 = x1+d*(n-1)
s = (x1+x100)*n/2
print s

0 3-4 Python中什么是变量

2019-04-03

sssmmmx

print [int(x + y + z) for x in '123456789' for y in '0123456789' for z in '1234567890' if x==z]

0 10-4 多层表达式

2019-04-02

sssmmmx

def toUppers(L):
return [x.upper() for x in L if isinstance(x,str)]

print toUppers(['Hello', 'world', 101])

1 10-3 条件过滤

2019-04-02

sssmmmx

print [(x+1)*x for x in range(1, 100, 2)]

0 10-1 生成列表

2019-04-02

桦大木

break就相当于刹车咯

0 5-6 Python之 break退出循环

2019-04-02

sssmmmx

L = range(1, 101)
print L[-10:]
print L[-46::5]

0 8-2 倒序切片

2019-04-02

慕斯7535926

score = 75
if score >= 60:
print 'passed'

0 5-1 Python之if语句

2019-04-02

_Gavin

基本上是ascii编码方式，由此Python自然调用ascii编码解码程序去处理字符流，当字符流不属于ascii范围内，就会抛出异常（ordinal not in range(128)）需要添加引入sys才可以额

3 3-7 Python中Unicode字符串

2019-04-02

慕仔5553935

print 'hello,python'
print 'hello,'+'python.'

0 3-2 Python之print语句

2019-04-02

沙丘之石

for x in ['1','2','3','4','5','6','7','8','9',]:
for y in ['0','1','2','3','4','5','6','7','8','9',]:
if x < y:
print x + y

for x in [1, 2, 3, 4, 5, 6, 7, 8, 9]:
for y in [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]:
if x < y:
print x * 10 + y

2 5-8 Python之多重循环

2019-04-01