Python/String
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Using statements
| Code | |
|---|---|
| Length |
len(s)
|
| Substring | s = '2018-01-01'
s[:4]
s[5:]
s[5:7]
|
| Has substring | if '18' in '2018-01-01': ...
|
Using methods
| Sample | |
|---|---|
| bytes => str | b'abc'.decode('utf-8')
|
| Prefix & Suffix | if s.startswith(): ...
if s.endswith(): ...
|
| Formatting | s = '{} seconds elapsed'.format(time.time() - begin)
|
| To Join & Split | '.'.join((127,0,0,1))
','.join((a,b,c))
':'.join((user,group))
|
| To trim | s = s.trim()
s = s.ltrim()
s = s.rtrim()
|
Printing
| TODO | Code |
|---|---|
| Without newline |
print('Result is: ', end='')
print('passed')
|
| With colors |
print('\033[91mFailed\033[0m')
print('\033[92mPassed\033[0m')
|
| Load printed text |
stdout_backup = sys.stdout
sbuf = io.StringIO()
sys.stdout = sbuf
print('previous message')
sbuf.seek(0)
printed_text = sbuf.read().rstrip()
sbuf.close()
sys.stdout = stdout_backup
print('Text printed previously:')
print(printed_text)
|