Loops
for i in range(x): |
for v in list: |
for idx, val in enumerate(iterable, start=0): |
[expression for item in list] |
while true expression: |
Conditionals
if condition: ... elif condition: ... else: ... |
[a for ... if condition] |
[a if condition else b for ..] |
10 > a > 100 |
if (x:=a+b) > c: |
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Strings
f'Variable {x} substitution' |
Regular Expressions
import re |
re.compile(pattern) |
returns a regex object |
re.search(pattern, string) |
Find the first match and return a match object |
re.match(pattern, string) |
Returns a match object if the beginning of the string matches |
re.split(pattern, string, maxsplit) |
Split string by occurrences of pattern, complex! |
re.findall(pattern, string) |
Return all non-overlapping matches as a list of strings |
re.finditer(pattern, string) |
Returns in iterator yielding match objects over non-overlapping matches |
re.sub(pattern, repl, string, count) |
Returns a string, replacing the first occurrence of pattern with the repl string |
re.sub(pattern, repl, string, count) |
Similar to sub but return a tuple (new_string, number_of_subs_made) |
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Container Types
List |
[] or [item1,item2] or list([iterable]) |
Ordered |
Tuple |
() or (item1, item2) or tuple([iterable]) |
Ordered, Immutable |
Dictionary |
{} or {key: value} or dict(a=1, b=2) |
No a priori order, unique keys |
Collection / Set |
set() or {1,2,3} or set{key1, key2} |
No a priori order, unique keys |
String |
'' or 'item' or str('item') |
String is also iterable, immutable |
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