Question

这是我上一个问题的后续问题： Python3 Numpy np.where Error。

我有2个这样的列表：

x = [None,[1, 15, 175, 20],
    [150, 175, 18, 20],
    [150, 175, 18],
    [192, 150, 177],...]


y = [None,[12, 43, 55, 231],
    [243, 334, 44, 12],
    [656, 145, 138],
    [12, 150, 177],
    [150, 177, 188],...]

我想删除小于30的x值和与删除的y值相对应的x值。（例如，(x,y) = (1,12)和x[1]中的y[1]）

为此，我得到了更正的x列表：

In : [[v2 for v2 in v1 if v2>=30] for v1 in x[1:]]
Out: [[175], [150, 175], [150, 175], [192, 150, 177]]

我还得到了其余x个值的坐标：

In : [(i,j) for i,v1 in enumerate(x[1:]) for j,v2 in enumerate(v1) if v2<30]
Out: [(0, 0), (0, 1), (0, 3), (1, 2), (1, 3), (2, 2)]

现在，我想使用这些坐标从y中删除项目。

我该如何实现？

Answer 1

new_y = []
for i in range(len(y)):
    new_y.append([y[i][j] for j in range(len(y[i])) if (i,j) not in BadList])

BadList是

[(i,j) for i,v1 in enumerate(x[1:]) for j,v2 in enumerate(v1) if v2<30]

Answer 2

您可以使用override fun onStart() { super.onStart() val cl: ConstraintLayout = findViewById(R.id.constraint_Layout) cl.setBackgroundColor(color_Background) }和

<OutputClaim ClaimTypeReferenceId="givenName" />
<OutputClaim ClaimTypeReferenceId="objectId" PartnerClaimType="sub" />
<OutputClaim ClaimTypeReferenceId="surname" />
<OutputClaim ClaimTypeReferenceId="email"/>
<OutputClaim ClaimTypeReferenceId="signInNames.emailAddress"/>
<OutputClaim ClaimTypeReferenceId="otherMails"/>

这等效于

<ClaimType Id="email">
 <DisplayName>Email Address</DisplayName>
 <DataType>string</DataType>
 <DefaultPartnerClaimTypes>
   <Protocol Name="OAuth2" PartnerClaimType="email" />
   <Protocol Name="OpenIdConnect" PartnerClaimType="email" />
   <Protocol Name="SAML2" PartnerClaimType="http://schemas.xmlsoap.org/ws/2005/05/identity/claims/email" />
  </DefaultPartnerClaimTypes>


<TechnicalProfile Id="AAD-UserReadUsingObjectId">
 ...
 <OutputClaims>
 <OutputClaim ClaimTypeReferenceId="displayName" />
 <OutputClaim ClaimTypeReferenceId="otherMails" />
 <OutputClaim ClaimTypeReferenceId="email" PartnerClaimType="signInNames.emailAddress" />
 <OutputClaim ClaimTypeReferenceId="givenName" />
 <OutputClaim ClaimTypeReferenceId="userPrincipalName" />
 <OutputClaim ClaimTypeReferenceId="surname" />


<UserJourney Id="SignInSaml">
    <OrchestrationSteps>
    <OrchestrationStep Order="1" Type="ClaimsExchange">
        <ClaimsExchanges>
        <ClaimsExchange Id="LocalAccountSigninEmailExchange" TechnicalProfileReferenceId="SelfAsserted-LocalAccountSignin-Email" />
        </ClaimsExchanges>
    </OrchestrationStep>
    <OrchestrationStep Order="2" Type="ClaimsExchange">
        <Preconditions>
        <Precondition Type="ClaimEquals" ExecuteActionsIf="true">
            <Value>authenticationSource</Value>
            <Value>socialIdpAuthentication</Value>
            <Action>SkipThisOrchestrationStep</Action>
        </Precondition>
        </Preconditions>
        <ClaimsExchanges>
        <ClaimsExchange Id="AADUserReadWithObjectId" TechnicalProfileReferenceId="AAD-UserReadUsingObjectId" />
        </ClaimsExchanges>
    </OrchestrationStep>
    <OrchestrationStep Order="3" Type="SendClaims" CpimIssuerTechnicalProfileReferenceId="Saml2AssertionIssuer" />
    </OrchestrationSteps>
    <ClientDefinition ReferenceId="DefaultWeb" />
</UserJourney>


<RelyingParty>
<DefaultUserJourney ReferenceId="SignInSaml" />
<UserJourneyBehaviors>
    <JourneyInsights TelemetryEngine="ApplicationInsights" InstrumentationKey="key" DeveloperMode="true" ClientEnabled="true" ServerEnabled="true" TelemetryVersion="1.0.0" />
</UserJourneyBehaviors>
<TechnicalProfile Id="PolicyProfile">
    <DisplayName>PolicyProfile</DisplayName>
    <Protocol Name="SAML2" />
    <SubjectAuthenticationRequirements TimeToLive="40000" ResetExpiryWhenTokenIssued="false" />
    <Metadata>
    <Item Key="PartnerEntity"><![CDATA[<md:EntityDescriptor 
        xmlns:md="urn:oasis:names:tc:SAML:2.0:metadata" validUntil="2026-12-27T23:42:22.079Z" entityID="someentityid" 
        xmlns:ds="http://www.w3.org/2000/09/xmldsig#"><md:SPSSODescriptor WantAssertionsSigned="true" protocolSupportEnumeration="urn:oasis:names:tc:SAML:2.0:protocol"><md:NameIDFormat>urn:oasis:names:tc:SAML:1.1:nameid-format:unspecified</md:NameIDFormat><md:AssertionConsumerService Binding="urn:oasis:names:tc:SAML:2.0:bindings:HTTP-POST" Location="https://sptest.iamshowcase.com/acs" index="0" isDefault="true"/></md:SPSSODescriptor></md:EntityDescriptor>]]></Item>
    </Metadata>
    <OutputClaims>
    <OutputClaim ClaimTypeReferenceId="givenName" />
    <OutputClaim ClaimTypeReferenceId="objectId" PartnerClaimType="sub" />
    <OutputClaim ClaimTypeReferenceId="surname" />
    <OutputClaim ClaimTypeReferenceId="email" />
    </OutputClaims>
    <SubjectNamingInfo ClaimType="sub" />
</TechnicalProfile>
</RelyingParty>

哪里

zip

和

In [395]: [(a, b) for z in list(zip(x, y))[1:] for a, b in list(zip(*z)) if a >= 30]
Out[395]:
[(175, 55),
 (150, 243),
 (175, 334),
 (150, 656),
 (175, 145),
 (192, 12),
 (150, 150),
 (177, 177)]

Answer 3

要获得更正的y值，我建议完全绕过坐标作为第一种方法。原因是您一路上可能会得到空列表，这会使您的输出形状变差，而不必特别跟踪它们。另外，删除元素通常比不首先包含元素要难得多。

以更正y的相同方式制作x的更正版本会容易得多：

y_corr = [[n for m, n in zip(row_x, row_y) if m >= 30] for row_x, row_y in zip(x, y)]

在这里，我们只是使用zip来浏览两组列表，就像处理一个列表一样。

如果您绝对坚持使用坐标，则建议您完全复制y并从更正后的副本中删除元素。您必须在每行中向后移动，以避免移动坐标的含义（例如，使用reversed）。您可以使用itertools.groupby对每一行进行实际的迭代：

y_corr = [row.copy() for row in y]
for r, group in groupby(reversed(coord), itemgetter(0)):
    for c in map(itemgetter(1), group):
        del y_corr[r][c]

您可以单独反转每个组，而不是反转coord，例如与map(itemgetter(1), reversed(group))。

更好的方法可能是计算保留值的坐标，而不是舍弃值。我建议您预先分配输出列表，以帮助跟踪空列表并保留形状：

from itertools import groupby
from operator import itemgetter

coord = [(r, c) for r, row in enumerate(x) for c, n in enumerate(row) if n >= 30]

y_corr = [[]] * len(x)
for r, group in groupby(coord, itemgetter(0)):
    y_corr[r] = [y[r][c] for c in map(itemgetter(1), group)]

如果您不关心保留空行，则可以跳过循环并改用单线：

y_corr = [[y[r][c] for c in map(itemgetter(1), group)] for r, group in groupby(coord, itemgetter(0))]

从Python上的列表中删除坐标

3 个答案: