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Mar 23, 2021 Replied to a topic by maloneleo88 › Python › 关于遍历列表，我这个错在哪了？百思不解 |
result = list(enumerate(ha))
for i in result[3::9]:
if ha[i[0]] == '0' and ha[i[0] + 1] == '0':
print(f"ha[{i[0] + 5}]: {ha[i[0] + 5]}")
for i in result[3::9]:
if ha[i[0]] == '0' and ha[i[0] + 1] == '0':
print(f"ha[{i[0] + 5}]: {ha[i[0] + 5]}")
Nov 23, 2020 Replied to a topic by WaterWestBolus › Python › Python3 正则表达式问题 |
>>> s=" 以及： "
>>> re.findall(r'[/\w]+\/\w+\.\w+', s)
['/img/2020pic/02/1.jpg', '/img/2020pic/02/2.png']
>>> re.findall(r'[/\w]+\/\w+\.\w+', s)
['/img/2020pic/02/1.jpg', '/img/2020pic/02/2.png']
Oct 24, 2020 Replied to a topic by uti6770werty › Python › 求优雅又高效率的写法，对字典列表，根据字典的多个 k,v 键值对，去重复。。。 |
@weyou 大神好厉害，牛 B 。
Oct 24, 2020 Replied to a topic by WaterWestBolus › Python › Python3 正则表达式问题 |
line = " 以及： "
pattern = re.compile('\((\S+)\)')
result = pattern.findall(line)
print(result)
pattern = re.compile('\((\S+)\)')
result = pattern.findall(line)
print(result)
import os
import re
domain_dict = {}
with open('mail.txt', encoding='utf-8') as f:
for line in f:
domain = re.split('@|:', line)[1]
domain_dict.setdefault(domain,[]).append(line)
for v in domain_dict.values():
print(v[0])
写的挺丑的，有更好的，我再回来贴上。
import re
domain_dict = {}
with open('mail.txt', encoding='utf-8') as f:
for line in f:
domain = re.split('@|:', line)[1]
domain_dict.setdefault(domain,[]).append(line)
for v in domain_dict.values():
print(v[0])
写的挺丑的，有更好的，我再回来贴上。
Sep 12, 2020 Replied to a topic by css3 › Python › 还得请教 Python 一个 dict 问题 |
mylist= {"key1": [{'a': '1'}, {'b': '2'}], "key2": [{"a": 2}, {"c": 4}]}
result = {}
for key, val in mylist.items():
for i in val:
result.setdefault(list(i)[0],[]).append(key)
print(result)
result = {}
for key, val in mylist.items():
for i in val:
result.setdefault(list(i)[0],[]).append(key)
print(result)
def in_alphabet(char):
char = str(char)
if char.islower():
return 'LowerCase'
elif char.isupper():
return 'UpperCase'
else:
return 'NotInAlphabet'
print(in_alphabet('a'))
print(in_alphabet('A'))
print(in_alphabet(1))
写的很粗糙，目前的理解就写样了。请多多指教。
char = str(char)
if char.islower():
return 'LowerCase'
elif char.isupper():
return 'UpperCase'
else:
return 'NotInAlphabet'
print(in_alphabet('a'))
print(in_alphabet('A'))
print(in_alphabet(1))
写的很粗糙，目前的理解就写样了。请多多指教。
Sep 11, 2020 Replied to a topic by Eyon › Python › Python 如何生成今天 0 点到现在的所有以小时为单位的时间字符串？ and ... |
from datetime import datetime
time_list = []
now = datetime.now()
start_day_hour = int(now.strftime('%Y%m%d00'))
stop_day_hour = int(now.strftime('%Y%m%d%H'))
for i in range(start_day_hour, stop_day_hour + 1):
time_list.append(i)
print(time_list)
time_list = []
now = datetime.now()
start_day_hour = int(now.strftime('%Y%m%d00'))
stop_day_hour = int(now.strftime('%Y%m%d%H'))
for i in range(start_day_hour, stop_day_hour + 1):
time_list.append(i)
print(time_list)
Sep 11, 2020 Replied to a topic by uti6770werty › Python › 求优雅又高效率的写法，对字典列表，根据字典的多个 k,v 键值对，去重复。。。 |
@weyou 大神，没看懂，请指点指点。
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