ENV:
python: 2.7.5
flask = 0.12.2
flask-cors = 2.0.1
flask-script = 2.0.5
启动一个python shell:
$ python
Python 2.7.5 (default, Nov 6 2016, 00:28:07)
[GCC 4.8.5 20150623 (Red Hat 4.8.5-11)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import math
>>> math.ceil(3.2)
4.0
math.ceil
返回一个浮点数,但当我使用flask-script
Shell命令启动python shell时,它返回一个整数:
$ ./bin/python manage.py shell
==========================================
Starting server at 2018-01-06 15:30:14
==========================================
In [1]: import math
In [2]: math.ceil(3.2)
Out[2]: 4
我知道python3的math.ceil
将返回一个整数,但是我使用python2,任何人都有好主意?
检查python版本:
In [1]: import sys
In [2]: print (sys.version)
2.7.5 (default, Nov 6 2016, 00:28:07)
[GCC 4.8.5 20150623 (Red Hat 4.8.5-11)]
答案 0 :(得分:0)
虽然看起来4是一个整数。烧瓶脚本可能在没有十进制扩展的情况下打印它。尝试运行
math.ceil(3.2)/3
烧瓶脚本中的。如果它正常工作,它将打印1.3333333333333333
。如果它打印1
,那么你应该尝试重新安装flask-script。
答案 1 :(得分:0)
我找到了根本原因,对于我们的烧瓶应用,我们添加了future包。
未来是Python 2和Python 3之间缺少的兼容性层。它允许您使用单个,干净的Python 3.x兼容代码库,以最小的开销支持Python 2和Python 3.
这个包重写了 public class Patientinfo {
private String queuenumber,appointmenttime,patientinitials,arrivaltime;
public Patientinfo{
}
public Patientinfo(String queunumber,String appointmenttime,String patientinitials,String arrivaltime) {
this.queunumber=queunumber;
this.appointmenttime=appointmenttime;
this.patientinitials=patientinitials;
this.arrivaltime=arrivaltime;
}
public String getQueuenumber() {
return queuenumber;
}
public String getArrivaltime() {
return arrivaltime;
}
public void setArrivaltime() {
this.arrivaltime=arrivaltime;
}
public String getAppointmenttime() {
return appointmenttime;
}
public String getPatientinitials() {
return patientinitials;
}
public void setPatientinitials(String patientinitials) {
this.patientinitials=patientinitials;
}
public void setAppointmenttime(String appointmenttime) {
this.appointmenttime=appointmenttime;
}
public void setQueuenumber(String queuenumber) {
this.queuenumber=queuenumber;
}
}
方法,它返回一个整数:
math.ceil
源代码如下:
In [5]: math.ceil.func_code
Out[5]: <code object ceil at 0x7fd74853cab0, file "/data/apps/ecoboost/eggs/future-0.16.0-py2.7.egg/future/backports/misc.py", line 31>