docs/wtfpython
docs/wtfpython
1
0
Fork 0
mirror of https://github.com/satwikkansal/wtfpython synced 2024-11-22 11:04:25 +01:00
Code Releases Activity

Update minor examples: Add one and remove one

Browse Source
This commit is contained in:
Satwik Kansal 2018-01-07 12:44:22 +05:30
parent c84c827248
commit b624ed908d
1 changed files with 27 additions and 20 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

47
README.md vendored
View File

@ -1812,6 +1812,31 @@ True
---
### Half triple-quoted strings
Suggested by @asottile in [this](https://github.com/satwikkansal/wtfpython/issues/40) issue.
**Output:**
```py
>>> print('wtfpython''')
wtfpython
>>> print("wtfpython""")
wtfpython
>>> # The following statements raise `SyntaxError`
>>> # print('''wtfpython')
>>> # print("""wtfpython")
```
#### 💡 Explanation:
+ Python support implicit [string literal concatenation](https://docs.python.org/2/reference/lexical_analysis.html#string-literal-concatenation), Example,
```
>>> print("wtf" "python")
wtfpython
>>> print("wtf" "") # or "wtf"""
wtf
```
+ `'''` and `"""` are also string delimiters in Python which causes a SyntaxError because the Python interpreter was expecting a terminating triple quote as delimiter while scanning the currently encountered triple quoted string literal.
### Let's see if you can guess this?
Suggested by @PiaFraus in [this](https://github.com/satwikkansal/wtfPython/issues/9) issue.
@ -1908,26 +1933,6 @@ a, b = a[b] = {}, 5
print(dis.dis(f))
```
* Half triple-quoted strings (suggested by @asottile in [this](https://github.com/satwikkansal/wtfpython/issues/40) issue).
```py
>>> print('wtfpython''')
wtfpython
>>> print("wtfpython""")
wtfpython
>>> # The following statements raise `SyntaxError`
>>> # print('''wtfpython')
>>> # print("""wtfpython")
```
**💡 Explanation:**
+ Python support implicit [string literal concatenation](https://docs.python.org/2/reference/lexical_analysis.html#string-literal-concatenation), Example,
```
>>> print("wtf" "python")
wtfpython
>>> print("wtf" "") # or "wtf"""
wtf
```
+ `'''` and `"""` are also string delimiters in Python which causes a SyntaxError because the Python interpreter was expecting a terminating triple quote as delimiter while scanning the currently encountered triple quoted string literal.
* Multiple Python threads won't run your *Python code* concurrently (yes you heard it right!). It may seem intuitive to spawn several threads and let them execute your Python code concurrently, but, because of the [Global Interpreter Lock](https://wiki.python.org/moin/GlobalInterpreterLock) in Python, all you're doing is making your threads execute on the same core turn by turn. Python threads are good for IO-bound tasks, but to achieve actual parallelization in Python for CPU-bound tasks, you might want to use the Python [multiprocessing](https://docs.python.org/2/library/multiprocessing.html) module.
* List slicing with out of the bounds indices throws no errors
@ -1937,6 +1942,8 @@ a, b = a[b] = {}, 5
[]
```
* `int('١٢٣٤٥٦٧٨٩')` returns `123456789` in Python 3. In Python, Decimal characters include digit characters, and all characters that can be used to form decimal-radix numbers, e.g. U+0660, ARABIC-INDIC DIGIT ZERO. Here's an [interesting story](http://chris.improbable.org/2014/8/25/adventures-in-unicode-digits/) related to this behavior of Python.
---