Join method in python

description

The join() method in Python is used to concatenate elements in a sequence with specified characters to generate a new string.

grammar

'sep'.join(sequence)

parameter

• sequence: The sequence of elements to be connected, which can be a tuple, list, string, dictionary
• sep: Separator (,.-etc.), can be empty

return value

Use sep as the separator to merge all the elements in the sequence into a new string, and return a new string generated by connecting the elements with the separator sep

Instance

a = ['A','B','C','D','E','F','G']
print(' '.join(a)) # A B C D E F G 以空格作为连接符

b = ('A','B','C','D','E','F','G')
print(''.join(b)) # ABCDEFG 直接相连

c = 'ABCDEFG'
print(','.join(c)) # A,B,C,D,E,F,G 以逗号作为连接符

d =  {
    
    'hello':1,'good':2,'boy':3,'girl':4}
print(' '.join(d)) # hello good boy girl 以空格作为连接符