From ee5cb2df81421b5b7c26713b08f7838552d9792c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jure=20=C5=A0orn?= <sornjure@gmail.com>
Date: Sat, 7 Apr 2018 13:00:35 +0200
Subject: [PATCH] Regex
---
README.md | 23 +++++++++++------------
1 file changed, 11 insertions(+), 12 deletions(-)
diff --git a/README.md b/README.md
index 362b03a..bd5f35f 100644
--- a/README.md
+++ b/README.md
@@ -23,7 +23,7 @@ List
```python
sum(<list>)
-sorted_by_second = sorted(<list>, key=lambda tup: tup[1])
+sorted_by_second = sorted(<list>, key=lambda el: el[1])
flattened_list = [item for sublist in <list> for item in sublist]
```
@@ -64,7 +64,7 @@ Set
### Frozenset
#### Is hashable and can be used as a key in dictionary:
```python
-<set> = frozenset()
+<frozenset> = frozenset()
```
Range
@@ -85,12 +85,12 @@ for i, <el> in enumerate(<collection> [, i_start])
Named Tuple
-----------
```python
->>> TestResults = collections.namedtuple('TestResults', ['filed', 'attempted'])
->>> a = TestResults(1, attempted=2)
-TestResults(filed=1, attempted=2)
->>> a.filed
+>>> Point = collections.namedtuple('Point', ['x', 'y'])
+>>> a = Point(1, y=2)
+Point(x=1, y=2)
+>>> a.x
1
->>> getattr(a, 'attempted')
+>>> getattr(a, 'y')
2
```
@@ -134,7 +134,7 @@ next(stepper) # 10 (, 12, 14, ...)
Type
----
```python
-type(<el>) # <class 'int'>/<class 'str'>/...
+type(<el>) # <class 'int'> / <class 'str'> / ...
```
```python
import numbers
@@ -163,14 +163,13 @@ print(<el> [, <el>, end='', sep='', file=<file>])
import re
re.sub(<regex>, new, text, count=0)
re.search(<regex>, text) # Searches for first occurrence of pattern.
-re.match(<regex>, text) # Searches only at the beginning of the string.
+re.match(<regex>, text) # Searches only at the beginning of the string.
re.findall(<regex>, text)
re.split(<regex>, text, maxsplit=0) # Use brackets in regex to keep the matches.
```
-**'Search' and 'match' functions return a 'Match' object. Use '.group()' method on it to get the match.**
-**Parameter 'flags=re.IGNORECASE' can be used with all functions.**
-**Parameter 'flags=re.DOTALL' makes dot also accept newline.**
+**'Search' and 'match' functions return a 'Match' object. Use '.group()' method on it to get the whole match, or '.group(1)' to get the part in first bracket.**
+**Parameter 'flags=re.IGNORECASE' can be used with all functions. Parameter 'flags=re.DOTALL' makes dot also accept newline.**
**Use '\\\\1' or r'\1' for backreference.**
#### Special Sequences: