最近提到了python版本的转换，之后的项目不得不使用python3版本来作为主要的版本了，所以现在抽点时间来学习一下python3的语法，毕竟2和3的差距还是很大的，关于2的教程和书籍铺天盖地有很多，但是关于3的学习资料就显得相对匮乏了很多，这里简单的实践了一些具体如下：
#!usr/bin/env python
# encoding:utf-8
'''
__Author__:沂水寒城
功能：之前一直使用python2，现在要转手使用python3，拿小程序练习一下
'''
import math
import cmath
import urllib
import chardet
import unicodedata
import lxml
def calNumSqrt(one_num):
'''
求一个数字的平方根
'''
if one_num >= 0:
res = math.sqrt(one_num)
else:
res = cmath.sqrt(one_num)
print('{0} Sqrt is:{1}'.format(one_num,res))
def judgeNumber(one_str):
'''
判断字符串是否是数字
'''
flag = None
try:
if type(eval(one_str)) == int or type(eval(one_str)) == float:
flag = True
except:
flag=False
if flag:
print('{} is number'.format(one_str))
else:
print('{} is not number'.format(one_str))
def judgeRunYear(one_year):
'''
判断指定年份是否是闰年
闰年判断条件：
整百年能被400整除的是闰年、非整百年能被4整除的为闰年
'''
flag = None
if one_year % 100 == 0:
if one_year % 400 == 0:
flag = True
else:
flag = False
else:
if one_year % 4 == 0:
flag = True
else:
flag = False
if flag:
print('{} is RunYear'.format(one_year))
else:
print('{} is not RunYear'.format(one_year))
def judgeZhiNum(one_num):
'''
判断给定数字是否是质数
'''
flag = None
if type(one_num) == str:
flag = False
elif one_num == 1 or one_num == 2:
flag=True
elif one_num < 1:
flag = False
else:
for i in range(2,(one_num)):
if one_num % i == 0:
flag = False
break
else:
flag = True
if flag:
print('{} is ZhiNum'.format(one_num))
else:
print('{} is not ZhiNum'.format(one_num))
def mutiTable(num):
'''
乘法表
'''
for i in range(1,num):
for j in range(1,i+1):
print('{}x{}={}\t'.format(j, i, i*j), end = '')
print()
def armStrongNum(one_num):
'''
判断给定数字是否是阿姆斯特朗数
'''
flag = None
if type(one_num) == str:
try:
if type(eval(one_num)) == int:
flag = True
one_num = int(one_num)
except TypeError:
flag = False
else:
flag = True
if flag:
length=len(str(one_num))
tmpNum=0
num_list = list(str(one_num))
for i in range(len(num_list)):
tmpNum += math.pow(int(num_list[i]),length)
if tmpNum == one_num:
print('{} is armStrongNum'.format(one_num))
else:
print('{} is not armStrongNum'.format(one_num))
else:
print('{} is not armStrongNum'.format(one_num))
def asciiTransfomer(one_ele):
'''
ASCII码转换器
'''
if type(one_ele) == str:
print('{0} ASCII is {1}'.format(one_ele,ord(one_ele)))
else:
print('{0} corresponding char is {1}'.format(one_ele,chr(one_ele)))
def oneLineOut():
'''
python可以多行代码使用;进行分割写在同一行中
'''
one_list = [1,3,5]; two_list = [2,4,6]; print('one+two is:',one_list+two_list)
def numPlay():
'''
数字类型转化实践
'''
one_num=9
print('{0} to float is :{1}'.format(one_num,float(one_num)))
print('{0} to complex is :{1}'.format(one_num,complex(one_num)))
one_num=-23
print('{0} to abs is :{1}'.format(one_num,abs(one_num)))
one_num=5.612302
print('{0} up is :{1}'.format(one_num,math.ceil(one_num)))#上界
print('{0} down is :{1}'.format(one_num,math.floor(one_num)))#下界
print('{0} log is :{1}'.format(one_num,math.log(one_num)))
print('{0} log is :{1}'.format(one_num,math.modf(one_num)))#整数、小数分离
print('{0} round is :{1}'.format(one_num,round(one_num,5)))
print('{0} sqrt is :{1}'.format(one_num,math.sqrt(one_num)))
pi=math.pi
e=math.e
print('{0} is :{1}'.format('pi',pi))
print('{0} is :{1}'.format('e',e))
def strPlay():
'''
字符串类型转化实践
'''
one_str='university'
if one_str.startswith('u'):
print('startswith')
if one_str.endswith('y'):
print('endswith')
if one_str.find('e') == -1:
print('Not contain e')
else:
print('Contain e,index is:{}'.format(one_str.index('e')))
if one_str.isalnum():
#如果字符串至少有一个字符并且所有字符都是字母或数字则返 回 True,否则返回 False
print('isalnum')
if one_str.isdigit():
print('isdigit')
if one_str.islower():
#如果字符串中包含至少一个区分大小写的字符，并且所有这些(区分大小写的)字符都是小写，则返回 True，否则返回 False
print('islower')
if one_str.isupper():
#如果字符串中包含至少一个区分大小写的字符，并且所有这些(区分大小写的)字符都是大写，则返回 True，否则返回 False
print('isupper')
if one_str.isnumeric():
#如果字符串中只包含数字字符，则返回 True，否则返回 False
print('isnumeric')
if one_str.istitle():
#如果字符串是标题化的(见 title())则返回 True，否则返回 False
print('istitle')
print('{0} upper is: {1}'.format(one_str,one_str.upper()))
print('{0} lower is: {1}'.format(one_str,one_str.lower()))
print('{0} - join is: {1}'.format(one_str,'-'.join(list(one_str))))
def exceptionFunc():
'''
异常的处理
'''
one_name="程咬金"
try:
one_name=one_name.encode('utf-8')
print('name is: {}'.format(one_name))
print('name encoding style is: {}'.format(chardet.detect(one_name)))
except:
one_name=one_name.encode('gbk')
print('name is: {}'.format(one_name))
print('name encoding style is: {}'.format(chardet.detect(one_name)))
else:
print('name is: {}'.format(one_name))
print('name encoding style is: {}'.format(chardet.detect(one_name)))
finally:
print('exceptionFunc finished!!!')
if __name__=='__main__':
calNumSqrt(16)
calNumSqrt(-36)
calNumSqrt(40)
print('-*'*30)
judgeNumber('apple')
judgeNumber('3.14159265354')
judgeNumber('1e3')
print('-*'*30)
judgeRunYear(2000)
judgeRunYear(2004)
judgeRunYear(2015)
print('-*'*30)
judgeZhiNum(1)
judgeZhiNum(5)
judgeZhiNum(8)
print('-*'*30)
mutiTable(4)
mutiTable(6)
mutiTable(10)
print('-*'*30)
armStrongNum(153)
armStrongNum(666)
armStrongNum(1634)
print('-*'*30)
asciiTransfomer('A')
asciiTransfomer(112)
asciiTransfomer('Z')
print('-*'*30)
oneLineOut()
print('-*'*30)
numPlay()
print('-*'*30)
strPlay()
print('-*'*30)
exceptionFunc()
print('-*'*30)
结果如下：
16 Sqrt is:4.0
-36 Sqrt is:6j
40 Sqrt is:6.324555320336759
-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
apple is not number
3.14159265354 is number
1e3 is number
-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
2000 is RunYear
2004 is RunYear
2015 is not RunYear
-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
1 is ZhiNum
5 is ZhiNum
8 is not ZhiNum
-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
1x1=1
1x2=2 2x2=4
1x3=3 2x3=6 3x3=9
1x1=1
1x2=2 2x2=4
1x3=3 2x3=6 3x3=9
1x4=4 2x4=8 3x4=12 4x4=16
1x5=5 2x5=10 3x5=15 4x5=20 5x5=25
1x1=1
1x2=2 2x2=4
1x3=3 2x3=6 3x3=9
1x4=4 2x4=8 3x4=12 4x4=16
1x5=5 2x5=10 3x5=15 4x5=20 5x5=25
1x6=6 2x6=12 3x6=18 4x6=24 5x6=30 6x6=36
1x7=7 2x7=14 3x7=21 4x7=28 5x7=35 6x7=42 7x7=49
1x8=8 2x8=16 3x8=24 4x8=32 5x8=40 6x8=48 7x8=56 8x8=64
1x9=9 2x9=18 3x9=27 4x9=36 5x9=45 6x9=54 7x9=63 8x9=72 9x9=81
-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
153 is armStrongNum
666 is not armStrongNum
1634 is armStrongNum
-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
A ASCII is 65
112 corresponding char is p
Z ASCII is 90
-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
one+two is: [1, 3, 5, 2, 4, 6]
-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
9 to float is :9.0
9 to complex is :(9+0j)
-23 to abs is :23
5.612302 up is :6
5.612302 down is :5
5.612302 log is :1.7249609740496388
5.612302 log is :(0.6123019999999997, 5.0)
5.612302 round is :5.6123
5.612302 sqrt is :2.369029759205232
pi is :3.141592653589793
e is :2.718281828459045
-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
startswith
endswith
Contain e,index is:4
isalnum
islower
university upper is: UNIVERSITY
university lower is: university
university - join is: u-n-i-v-e-r-s-i-t-y
-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
name is: b'\xe7\xa8\x8b\xe5\x92\xac\xe9\x87\x91'
name encoding style is: {'encoding': 'utf-8', 'confidence': 0.87625, 'language':
''}
name is: b'\xe7\xa8\x8b\xe5\x92\xac\xe9\x87\x91'
name encoding style is: {'encoding': 'utf-8', 'confidence': 0.87625, 'language':
''}
exceptionFunc finished!!!
-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*继续学习，记录一下！