# -*- coding:utf-8 -*-
"""
Tools Bag.
Author: HuangTao
Date: 2018/04/28
Email: huangtao@ifclover.com
"""
import uuid
import time
import decimal
import datetime
def get_cur_timestamp():
"""Get current timestamp(second)."""
ts = int(time.time())
return ts
def get_cur_timestamp_ms():
"""Get current timestamp(millisecond)."""
ts = int(time.time() * 1000)
return ts
def get_datetime_str(fmt="%Y-%m-%d %H:%M:%S"):
"""Get date time string, year + month + day + hour + minute + second.
Args:
fmt: Date format, default is `%Y-%m-%d %H:%M:%S`.
Returns:
str_dt: Date time string.
"""
today = datetime.datetime.today()
str_dt = today.strftime(fmt)
return str_dt
def get_date_str(fmt="%Y%m%d", delta_days=0):
"""Get date string, year + month + day.
Args:
fmt: Date format, default is `%Y%m%d`.
delta_days: Delta days for currently, default is 0.
Returns:
str_d: Date string.
"""
day = datetime.datetime.today()
if delta_days:
day += datetime.timedelta(days=delta_days)
str_d = day.strftime(fmt)
return str_d
def ts_to_datetime_str(ts=None, fmt="%Y-%m-%d %H:%M:%S"):
"""Convert timestamp to date time string.
Args:
ts: Timestamp, millisecond.
fmt: Date time format, default is `%Y-%m-%d %H:%M:%S`.
Returns:
Date time string.
"""
if not ts:
ts = get_cur_timestamp()
dt = datetime.datetime.fromtimestamp(int(ts))
return dt.strftime(fmt)
def datetime_str_to_ts(dt_str, fmt="%Y-%m-%d %H:%M:%S"):
"""Convert date time string to timestamp.
Args:
dt_str: Date time string.
fmt: Date time format, default is `%Y-%m-%d %H:%M:%S`.
Returns:
ts: Timestamp, millisecond.
"""
ts = int(time.mktime(datetime.datetime.strptime(dt_str, fmt).timetuple()))
return ts
def get_utc_time():
"""Get current UTC time."""
utc_t = datetime.datetime.utcnow()
return utc_t
def utctime_str_to_ts(utctime_str, fmt="%Y-%m-%dT%H:%M:%S.%fZ"):
"""Convert UTC time string to timestamp(second).
Args:
utctime_str: UTC time string, e.g. `2019-03-04T09:14:27.806Z`.
fmt: UTC time format, e.g. `%Y-%m-%dT%H:%M:%S.%fZ`.
Returns:
timestamp: Timestamp(second).
"""
dt = datetime.datetime.strptime(utctime_str, fmt)
timestamp = int(dt.replace(tzinfo=datetime.timezone.utc).astimezone(tz=None).timestamp())
return timestamp
def utctime_str_to_ms(utctime_str, fmt="%Y-%m-%dT%H:%M:%S.%fZ"):
"""Convert UTC time string to timestamp(millisecond).
Args:
utctime_str: UTC time string, e.g. `2019-03-04T09:14:27.806Z`.
fmt: UTC time format, e.g. `%Y-%m-%dT%H:%M:%S.%fZ`.
Returns:
timestamp: Timestamp(millisecond).
"""
dt = datetime.datetime.strptime(utctime_str, fmt)
timestamp = int(dt.replace(tzinfo=datetime.timezone.utc).astimezone(tz=None).timestamp() * 1000)
return timestamp
def get_utctime_str(fmt="%Y-%m-%dT%H:%M:%S.%fZ"):
"""Get current UTC time string.
Args:
fmt: UTC time format, e.g. `%Y-%m-%dT%H:%M:%S.%fZ`.
Returns:
utctime_str: UTC time string, e.g. `2019-03-04T09:14:27.806Z`.
"""
utctime = get_utc_time()
utctime_str = utctime.strftime(fmt)
return utctime_str
def get_uuid1():
"""Generate a UUID based on the host ID and current time
Returns:
s: UUID1 string.
"""
uid1 = uuid.uuid1()
s = str(uid1)
return s
def get_uuid3(str_in):
"""Generate a UUID using an MD5 hash of a namespace UUID and a name
Args:
str_in: Input string.
Returns:
s: UUID3 string.
"""
uid3 = uuid.uuid3(uuid.NAMESPACE_DNS, str_in)
s = str(uid3)
return s
def get_uuid4():
"""Generate a random UUID.
Returns:
s: UUID5 string.
"""
uid4 = uuid.uuid4()
s = str(uid4)
return s
def get_uuid5(str_in):
"""Generate a UUID using a SHA-1 hash of a namespace UUID and a name
Args:
str_in: Input string.
Returns:
s: UUID5 string.
"""
uid5 = uuid.uuid5(uuid.NAMESPACE_DNS, str_in)
s = str(uid5)
return s
def float_to_str(f, p=20):
"""Convert the given float to a string, without resorting to scientific notation.
Args:
f: Float params.
p: Precision length.
Returns:
s: String format data.
"""
if type(f) == str:
f = float(f)
ctx = decimal.Context(p)
d1 = ctx.create_decimal(repr(f))
s = format(d1, 'f')
return s
