我正在尝试将一个变量设置为库中的变量。有命令执行此操作吗？
我正在尝试制作一个简单的时区转换器，我想检查输入变量，但是我只能从pytz中检查列表中的变量，所以我想“自动完成”变量。我可以这样做吗？
import time
import pytz
country = input("enter country")
from datetime import datetime
from pytz import timezone
fmt = "%H:%M %p"
now_utc = datetime.now(timezone('UTC'))
print (now_utc.strftime(fmt))
from pytz import all_timezones
if country in all_timezones:
country = #completed country in list 'all_timezones'
timecountry = now_utc.astimezone(timezone(country))
print (timecountry.strftime(fmt))
答案 0 :(得分：1)
因此，您正在寻找一种将用户输入与public Transform sightStart, sightEnd, sightStart2, sightEnd2;
public Vector3 direction = Vector3.right;
public Vector3 direction2 = Vector3.right;
public float speed = 2f;
public bool spotted = false;
public bool rotate, moveEnemy = false;
public Camera mainCam;
public GameObject EndSight, EndSight2;
void Start () {
speed = 2f;
spotted = false;
rotate = false;
moveEnemy = false;
mainCam = GameObject.Find ("Main Camera").GetComponent<Camera> ();
}
void Update () {
Behaviours ();
if (mainCam.WorldToScreenPoint (this.transform.position).x > Screen.width / 2) {
direction.x = -1;
InvokeRepeating ("EnemySight", 0, 10f);
if (moveEnemy == false) {
RayCasting ();
Destroy (gameObject, 7f);
}
} else {
direction.x = 1;
InvokeRepeating ("EnemySight", 0, 10f);
if (moveEnemy == false) {
RayCasting2 ();
Destroy (gameObject, 7f);
}
}
}
void EnemySight() {
if (rotate == false) {
if (mainCam.WorldToScreenPoint (this.transform.position).x > Screen.width / 2) {
EndSight.transform.Translate (direction2 * speed * Time.deltaTime);
direction2.x = 0;
direction2.y = 1;
StartCoroutine (wait1 ());
} else {
EndSight2.transform.Translate (direction2 * speed * Time.deltaTime);
direction2.x = 0;
direction2.y = 1;
StartCoroutine (wait1 ());
}
} else if (rotate == true) {
if (mainCam.WorldToScreenPoint (this.transform.position).x > Screen.width / 2) {
EndSight.transform.Translate (direction2 * speed * Time.deltaTime);
direction2.x = 0;
direction2.y = -1;
StartCoroutine (wait2 ());
} else {
EndSight2.transform.Translate (direction2 * speed * Time.deltaTime);
direction2.x = 0;
direction2.y = -1;
StartCoroutine (wait2 ());
}
}
}
IEnumerator wait1() {
yield return new WaitForSeconds (0.7f);
rotate = true;
}
IEnumerator wait2() {
yield return new WaitForSeconds (0.7f);
rotate = false;
}
void RayCasting()
{
Debug.DrawLine (sightStart.position, sightEnd.position, Color.black);
spotted = Physics2D.Linecast (sightStart.position, sightEnd.position, 1 << LayerMask.NameToLayer("Items"));
}
void RayCasting2()
{
Debug.DrawLine (sightStart2.position, sightEnd2.position, Color.black);
spotted = Physics2D.Linecast (sightStart2.position, sightEnd2.position, 1 << LayerMask.NameToLayer("Items"));
}
void Behaviours()
{
if (spotted == true) {
transform.Translate (direction * speed * Time.deltaTime);
speed = 2f;
} else if (spotted == false) {
speed = 0;
}
}
void OnTriggerExit2D (Collider2D col) {
if (col.tag == "object1") {
speed = 0;
CancelInvoke();
}
if (col.tag == "object2") {
speed = 0;
CancelInvoke();
}
if (col.tag == "object3") {
speed = 0;
CancelInvoke();
}
if (col.tag == "object4") {
speed = 0;
CancelInvoke();
}
}
}
中的字符串进行匹配并寻找有效时区的方法。
据我所知，没有内置函数可以执行此操作，您必须自己完成操作。
这不是一项紧迫的任务，因为您可能有多个选择（假设用户仅输入“欧洲”），则必须考虑到这一点
可能的方法如下：
all_timezones通过列表理解，我在import datetime
import time
import pytz
country = input("Contry name: ")
now_utc = datetime.datetime.now(pytz.timezone('UTC'))
fmt = "%H:%M %p"
while True:
possible_countries = [ac for ac in pytz.all_timezones if country in ac]
if len(possible_countries) == 1:
cc = possible_countries[0]
timecountry = now_utc.astimezone(pytz.timezone(cc))
print(timecountry.strftime(fmt))
break
elif len(possible_countries) > 1:
print("Multiple countries are possible, please rewrite the country name")
for cs in possible_countries:
print(cs)
country = input("Contry name: ")
else:
print("No idea of the country, here are the possible choices")
for cs in pytz.all_timezones:
print(cs)
country = input("Contry name: ")
中查找包含用户输入的所有字符串。如果只有一个，脚本将假定它是正确的脚本并执行任务。否则，如果有多个可能性，它将打印它们（每行一个for循环，但是您可以只打印列表，使其在屏幕上更短），然后要求用户重写国家/地区名称。如果不匹配，则仅打印所有可能性。您可能会发现在命令行上看到它很丑陋，但是您应该先了解一下然后再加以改进。
如果您还希望检查用户输入中的拼写错误，则要困难得多。