有时需要多次调用提取字串内容的函数时，使用正则表达式不是很方便的时候，可以封装成函数调用。

获取某字符后的int型：

get_int_after

def get_int_after(s, f): S = s.upper() F = f.upper() par = S.partition(F) int_str = "" for c in par[2]: if c in ("-", "0", "1", "2", "3", "4", "5", "6", "7", "8", "9"): int_str += c else: if c == ":" or c == "=" or c == " ": if int_str == "": continue break try: return int(int_str) except: print("Get Int After Fail") print(f, s) return "Parsing error"

例如: 获取如下字串中“Tput”的值：

string = "BLER0=7/100, BLER1=0/100, TRX=863 sf/s, Tput=29864840 bits/s, retx=8/100"

get_int_after（string, "Tput="）

#return 29864840

获取某字符后的hex型：

get_hex_after

def get_hex_after(s, f): par = s.partition(f) hex = 0 for c in par[2]: cap_c = c.capitalize() if ord(cap_c) in range(ord("0"), ord("9") + 1): hex *= 16 hex += ord(cap_c) - ord("0") elif ord(cap_c) in range(ord("A"), ord("F") + 1): hex *= 16 hex += ord(cap_c) - ord("A") + 10 else: if c == ":" or c == "=" or c == " " or c =="x": if hex == 0: continue break return hex

例如: 获取如下字串中“PSN”的值：

string = "Write to SIT: SIT(idx=0, pri=0), si_idx=[1232, 1246), PSN=0x8F71"

get_hex_after（string, "PSN="）

#return 0x8F71

获取两个字符之间的内容：

get_str_btw

def get_str_btw(s, f, b): par = s.partition(f) return (par[2].partition(b))[0][:]

例如：获取如下字串中的“THIS IS WHAT YOU WANT”:

string = “123 THIS IS WHAT YOU WANT 456”

get_str_btw(string, "123 ", " 456")   #注意空格

#return “THIS IS WHAT YOU WANT”