diff --git a/Python-Language/08. 字符串.md b/Python-Language/08. 字符串.md
index 91bba42..9aabd99 100644
--- a/Python-Language/08. 字符串.md	
+++ b/Python-Language/08. 字符串.md	
@@ -299,14 +299,16 @@ print(str6.splitlines(True))  # ['I \n', ' Love \n', ' LsgoGroup']
 - `maketrans(intab, outtab)` 创建字符映射的转换表，第一个参数是字符串，表示需要转换的字符，第二个参数也是字符串表示转换的目标。
 - `translate(table, deletechars="")` 根据参数`table`给出的表，转换字符串的字符，要过滤掉的字符放到`deletechars`参数中。
 
+
 【例子】
+
 ```python
-str = 'this is string example....wow!!!'
+str7 = 'this is string example....wow!!!'
 intab = 'aeiou'
 outtab = '12345'
-trantab = str.maketrans(intab, outtab)
+trantab = str7.maketrans(intab, outtab)
 print(trantab)  # {97: 49, 111: 52, 117: 53, 101: 50, 105: 51}
-print(str.translate(trantab))  # th3s 3s str3ng 2x1mpl2....w4w!!!
+print(str7.translate(trantab))  # th3s 3s str3ng 2x1mpl2....w4w!!!
 ```
 
 
@@ -318,17 +320,17 @@ print(str.translate(trantab))  # th3s 3s str3ng 2x1mpl2....w4w!!!
 
 【例子】
 ```python
-str = "{0} Love {1}".format('I', 'Lsgogroup')  # 位置参数
-print(str)  # I Love Lsgogroup
+str8 = "{0} Love {1}".format('I', 'Lsgogroup')  # 位置参数
+print(str8)  # I Love Lsgogroup
 
-str = "{a} Love {b}".format(a='I', b='Lsgogroup')  # 关键字参数
-print(str)  # I Love Lsgogroup
+str8 = "{a} Love {b}".format(a='I', b='Lsgogroup')  # 关键字参数
+print(str8)  # I Love Lsgogroup
 
-str = "{0} Love {b}".format('I', b='Lsgogroup')  # 位置参数要在关键字参数之前
-print(str)  # I Love Lsgogroup
+str8 = "{0} Love {b}".format('I', b='Lsgogroup')  # 位置参数要在关键字参数之前
+print(str8)  # I Love Lsgogroup
 
-str = '{0:.2f}{1}'.format(27.658, 'GB')  # 保留小数点后两位
-print(str)  # 27.66GB
+str8 = '{0:.2f}{1}'.format(27.658, 'GB')  # 保留小数点后两位
+print(str8)  # 27.66GB
 ```