函数5：join

# 列表
seq1 = ['what','is','your','name']
print(':'.join(seq1))
# 结果：what:is:your:name

# 字符串
seq2 = 'what is your namw'
print(':'.join(seq2))
# 结果：w:h:a:t: :i:s: :y:o:u:r: :n:a:m:w

# 元组
seq3 = ('what','is','your','name')
print(':'.join(seq3))
# 结果：what:is:your:name

# 字典
seq4 = {'what':1,'is':2,'your':3,'name':4}
print(':'.join(seq4))
# 结果：what:is:your:name