I have recently been learning python 3 and I cannot get any examples involving string interpolation (formatting) to work.
In [1]: state = "Washington"
In [2]: state
Out[2]: 'Washington'
In [3]: my_message = f"I live in {state}"
File "<ipython-input-3-d004dd9e0255>", line 1
my_message = f"I live in {state}"
^
SyntaxError: invalid syntax
I figured my machine was defaulting to python 2, but a quick check reveals:
Python 3.5.2 (default, Nov 17 2016, 17:05:23) Type "copyright", "credits" or "license" for more information. IPython 5.2.2 -- An enhanced Interactive Python.
I am on Ubuntu 16.04:
python3 --version Python 3.5.2
Am I just overlooking basic syntax? I have run the same commands on a few computers from fellow students and it seems to execute just fine.
Answers:
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Method 1
As suggested by Josh Lee in the comment section, that kind of string interpolation was added in Python 3.6 only, see What’s New In Python 3.6 (here it’s called “PEP 498: Formatted string literals”).
You, however, seems to be using Python 3.5.2, which does not support that syntax.
Method 2
This is a pretty old question and not sure if answered somewhere else, but ran into same problem and landed on some confusing pages. Figured out a couple of minutes later. Below line should work.
my_message = "I live in {}".format(state)
.format works for 3.5. Documenting it here for someone who may need it for similar issue.
Method 3
What worked for me (in python 3.8.5 in sublime) was removing the f.
message = "I live in {state}"
I find it easier than .format(state)
All methods was sourced from stackoverflow.com or stackexchange.com, is licensed under cc by-sa 2.5, cc by-sa 3.0 and cc by-sa 4.0