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I would like to concatenate strings and variable values in Python 3.
For instance, in R I can do the following:
today <- as.character(Sys.Date())
paste0("In ", substr(today,1,4), " this can be an R way")
Executing this code in R yields [1] "In the year 2018 R is so straightforward".
In Python 3.6 have tried things like:
today = datetime.datetime.now()
"In year " + today.year + " I should learn more Python"
today.year on its own yields 2018, but the whole concatenation yields the error: 'int' object is not callable
What's the best way to concatenate strings and variable values in Python3?
654
Concatenation is the process of appending one string to the end of another string. You concatenate strings by using the + operator. For string literals and string constants, concatenation occurs at compile time; no run-time concatenation occurs. For string variables, concatenation occurs only at run time.
To concatenate a string to an int value, use the concatenation operator. Here is our int. int val = 3; Now, to concatenate a string, you need to declare a string and use the + operator.
Using the + operator is the most common way to concatenate two strings in Java. You can provide either a variable, a number, or a String literal (which is always surrounded by double quotes). Be sure to add a space so that when the combined string is printed, its words are separated properly.
You could try to convert today.year into a string using str().
It would be something like that:
"In year " + str(today.year) + " I should learn more Python"
If we need to use . way then str() is equivalent to __str__()
>>> "In year " + today.year.__str__() + " I should learn more Python"
# 'In year 2018 I should learn more Python'
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