The method of realizing full-angle half-angle conversion in Python _python

This article illustrates Python's method of realizing full-width half angle conversion, and believes that Python learning can be used for reference. As shown below:

First, full-angle half-angle Conversion Overview:

Full-width character Unicode encoding from 65281~65374 (hexadecimal 0xff01 ~ 0xff5e)
Half-width character Unicode encoding from 33~126 (hexadecimal 0x21~ 0x7E)
The space is more special, the whole angle is 12288 (0x3000), half angle is (0x20)
In addition, all corners/half-width are sorted in the order of Unicode encoding.
So we can deal with the blank data directly by using the +-method.

Two, full angle turn half angle:

The implementation code is as follows:

def strq2b (ustring): "" "" "" "" ""
  rstring = "for
  uchar in ustring:
    inside_code=ord (UCHAR)
    If inside_code==0x3000:
      inside_code=0x0020
    Else:
      inside_code-=0xfee0
    if inside_code<0x0020 or inside_code>0x7e:   #转完之后不是半角字符返回原来的字符
      rstring + + uchar
    rstring + = UNICHR (inside_code)
  Return rstring

Three, half angle to turn the whole angle:

The implementation code is as follows:

def strb2q (ustring): "" "" "" ""
  rstring = "for
  uchar in ustring:
    inside_code=ord (UCHAR)
    If inside_code<0x0020 or inside_code>0x7e:   #不是半角字符就返回原来的字符
      rstring + = Uchar
    if inside_code==0x0020 : #除了空格其他的全角半角的公式为: half-width = full-width -0xfee0
      inside_code=0x3000
    else:
      inside_code+=0xfee0
    rstring + = UNICHR (Inside_code)
  Return rstring

Four, test code:

A = strb2q ("abc12345")
print a
b = strq2b (a)
print B

Output:

abc12345
abc12345

Interested friends can debug run a bit, I believe there will be a certain harvest.