在python中打印多个列表

Question

Hey I wrote a python code (python 2.7.3) with multiple lists, but when I try to print them they always come with a space. I want to print the list in continuous manner but I'm unable to do so. I have one list which have integer values and other with character.

Eg: list1 (integer list has 123) and list2(character list has ABC).

Desired Output: ABC123 What I'm getting: ABC 123

What I did:

print "".join(list2),int("".join(str(x) for x in list1))

Any suggestion what I'm doing wrong?

Answer 1

l = ["A","B","C"]
l2 = [1,2,3]
print "".join(l+map(str,l2))
ABC123

map casts all ints to str , it is the same as doing [str(x) for x in l2] .

Answer 2

The space comes from the print statement. It automatically inserts a space between items separated with comma. I suppose you don't need to covert the concatenated string into an integer, then you concatenate strings from join and print them as one.

print "".join(list2)+"".join(str(x) for x in list1)

Alternatively you can switch to python3's print function, and use its sep variable.

from __future__ import print_function
letters=['A','B','C']
nums=[1,2,3]
print("".join(letters),int("".join(str(x) for x in nums)), sep="")

Answer 3

The , is what's adding the space since you are printing two things, a string 'ABC' and an integer 123. Try using + , which directly adds two strings together so you can print the string 'ABC123'

>>> list1=[1,2,3]
>>> list2=['A','B','C']
>>> print "".join(list2),int("".join(str(x) for x in list1))
ABC 123
>>> print "".join(list2)+"".join(str(x) for x in list1)
ABC123

Answer 4

Try concatenating the two lists you want while printing. Use "+" instead of ",". Here 'int' will give error as you can concatenate only strings. So try,

 print "".join(list2)"".join(str(x) for x in list1)

Answer 5

print adds a single space automatically between commas.

You can use the new print function:

from __future__ import print_function 
print("".join(list2),int("".join(str(x) for x in list1)), sep="")

See docs .

Note: This function is not normally available as a built-in since the name print is recognized as the print statement. To disable the statement and use the print() function, use this future statement at the top of your module