Python interview questions: string concatenation

Python string test point in interview questions#

There are several ways to connect strings and strings

Answer: 5 kinds

1. • Sign (plus sign)
2. direct connection
3. format
4. Connect with a comma (,), redirect standard output
5. join method

s ="hello""world"print(s)from io import StringIO
import sys
old_stdout = sys.stdout
result =StringIO()
sys.stdout = result
print('hello','world')
sys.stdout = old_stdout #Restore standard output
result_str = result.getvalue()print("Connect with comma: ", result_str)

How to connect between strings and non-strings#

1. • number
2. format
3. Redirect

How to make the object output specific content when the string is connected with the object, such as Myclass

classMyclass:
 def __str__(self):return'This is a Myclass Instance.'

my =Myclass()
s = s1 +str(my)print(s)