[issue29668] f-strings don't change the values as expected.

2017-02-27 Thread Rafael Capucho 

Rafael Capucho added the comment:

Serhiy Storchaka,

Thank you for your explanation.

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[issue29668] f-strings don't change the values as expected.

2017-02-27 Thread Rafael Capucho 

Rafael Capucho added the comment:

I got:

SELECT COUNT(*) FROM `{a}` entry WHERE entry.type == 'device' AND 
entry.instance == {a}

I expect the value of `{a}` changed, like:

SELECT COUNT(*) FROM `some_underscored_value` entry WHERE entry.type == 
'device' AND entry.instance == some_underscored_value

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[issue29668] f-strings don't change the values as expected.

2017-02-27 Thread Rafael Capucho 

Rafael Capucho added the comment:

```
a = "some_underscored_value"


u = (f" hello `{a}` cruel world"
 " hi")

print(u)

query = (f"SELECT COUNT(*) "
 "FROM `{a}` entry "
 "WHERE entry.type == 'device' "
 "AND entry.instance == {a}")

print(query)
```

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Added file: http://bugs.python.org/file46674/file.py

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[issue29668] f-strings don't change the values as expected.

2017-02-27 Thread Rafael Capucho 

New submission from Rafael Capucho:

In the attached file, the lines 4 and 6 have the same structure, the line 4 
changes the value of {a} properly, the line 6 didn't.

Thank you.

--
components: Interpreter Core
files: crazy.png
messages: 288649
nosy: Rafael Capucho
priority: normal
severity: normal
status: open
title: f-strings don't change the values as expected.
type: behavior
versions: Python 3.6
Added file: http://bugs.python.org/file46673/crazy.png

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