python发现了str.join

解释

>>> help(str.join)
Help on method_descriptor:

join(...)
S.join(iterable) -> str

Return a string which is the concatenation of the strings in the
iterable. The separator between elements is S.

>>>
示例代码：

if __name__ == "__main__":
myList = [str(i) for i in range(1, 7, 1)]
s1 = '},{'.join(myList)
print(s1)  # 1},{2},{3},{4},{5},{6
s2 = '{' + s1 + '}'
print(s2)  # {1},{2},{3},{4},{5},{6}
s3 = '{' + '},{'.join(myList) + '}'
print(s3)  # {1},{2},{3},{4},{5},{6}
exit(0)

结束。